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1ktjuua24 | chemistry | basics-of-organic-chemistry | isomerism | Arrange the following conformational isomers of n-butane in order of their increasing potential energy :<br/><br/><img src="data:image/png;base64,UklGRk4MAABXRUJQVlA4IEIMAACQfACdASoAA9EAP4HA2WO2MSymo3KKAsAwCWlu5TARVpe5jcLnedMX0v5s5uz/z/+tV5kb7VX/z6JNPT/kSH/+LrbONFAPpevh2TYTApmZmZYIZkT8l6S7kduXIl/MzMwEi/dt4mTxojLKIiIiId... | [{"identifier": "A", "content": "II < III < IV < I"}, {"identifier": "B", "content": "I < IV < III < II"}, {"identifier": "C", "content": "II < IV < III < I"}, {"identifier": "D", "content": "I < III < IV < II"}] | ["D"] | null | More stable less potential energy.<br><br>Stability order : I > III > IV > II<br><br>So<br><br>Potential energy : II > IV > III > I | mcq | jee-main-2021-online-31st-august-evening-shift | 495 |
1l54aap0d | chemistry | basics-of-organic-chemistry | isomerism | <p>Observe structures of the following compounds</p>
<p><img src="data:image/png;base64,UklGRuYPAABXRUJQVlA4INoPAADQXACdASoAA6sAPm02l0ikIqIhI3IJQIANiWlu/ELZUcm+3LRkpI+MP6323/6L8e/El8+/j/y95J0Tv5N9zv0H969tX773y/IjUF/Jf4v/ePtu9IX0AeJtsX+Z9AX2V+q/9n+699N6NfzPqAfmD5YPheecegr/qezD/c+Nn6z9gj9Yf95/bu0ELffOk++dJ986T70DZeD6STS7... | [] | null | 3 | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lc3ylbbv/91a507ff-ff15-464b-afdb-921c912b060d/d79686b0-84a5-11ed-a933-b186ba7d5038/file-1lc3ylbbw.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lc3ylbbv/91a507ff-ff15-464b-afdb-921c912b060d/d79686b0-84a5-11ed-a933-b186ba7d5038/fi... | integer | jee-main-2022-online-29th-june-morning-shift | 496 |
1l57t7n3x | chemistry | basics-of-organic-chemistry | isomerism | <p>Total number of possible stereoisomers of dimethyl cyclopentane is ____________.</p> | [] | null | 6 | Dimethyl cyclopentane <br><br><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l9xlcn22/5fe7ad99-2de1-4b7b-a0eb-30d0b9f576af/ed0821a0-598c-11ed-83a3-c3dd21dd3a69/file-1l9xlcn23.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l9xlcn22/5fe7ad99-2de1-4b7b-a0eb-30d0b9f576af/ed0821a0-... | integer | jee-main-2022-online-27th-june-morning-shift | 497 |
1l5am2eat | chemistry | basics-of-organic-chemistry | isomerism | <p>In the following structures, which on is having staggered conformation with maximum dihedral angle?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l5bs1xq4/8e5f8344-c5db-4a79-8c15-08fe315803ca/077933c0-fe5d-11ec-b169-b5046c590266/file-1l5bs1xq5.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l5bs1xq4/8e5f8344-c5db-4a79-8c15-08fe315803ca/077... | ["C"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8mckwy2/133ba80c-6d36-4368-b6c4-c230bfd0bd4c/ca7582a0-3f91-11ed-af9d-134e99e746ec/file-1l8mckwy3.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l8mckwy2/133ba80c-6d36-4368-b6c4-c230bfd0bd4c/ca7582a0-3f91-11ed-af9d-134e99e746ec/fi... | mcq | jee-main-2022-online-25th-june-morning-shift | 498 |
1l5c7cq39 | chemistry | basics-of-organic-chemistry | isomerism | <p>Number of electrophilic centres in the given compound is _______________.</p>
<p><img src="data:image/png;base64,UklGRmgOAABXRUJQVlA4IFwOAADwxgCdASoAA9UBP4HA2WW2MKynIfFZMsAwCWlu4XExG/Pn83/831ZdMcm+9T2yM7PZH+LfXl0WkNvX/0CPzP//6tNWz+t/j///06ff4eR+rP1Z+rP1Z+rP1Z+rP1Z+rP1ZcRcGk5E1jm9mZ1Oo4jmjFbNy/gc1s3L+BzWzcv4HNbNy/gc0... | [] | null | 3 | Given compounds :<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8jpy6dx/f659e647-23ef-4605-9def-d8b8edafe9a3/b8005050-3e1f-11ed-b0b2-43721ac9f16c/file-1l8jpy6dy.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l8jpy6dx/f659e647-23ef-4605-9def-d8b8edafe9a3/b8005050-3e1f... | integer | jee-main-2022-online-24th-june-morning-shift | 499 |
1l6f82qm0 | chemistry | basics-of-organic-chemistry | isomerism | <p>The total number of monobromo derivatives formed by the alkanes with molecular formula C<sub>5</sub>H<sub>12</sub> is (excluding stereo isomers) __________.</p> | [] | null | 8 | <p>Total monobromo derivatives = 8</p><p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lc8kimi5/3938c4fb-7719-4529-a298-07bea9042d7e/b83b41d0-872e-11ed-93b3-c381a41bf82e/file-1lc8kimi6.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lc8kimi5/3938c4fb-7719-4529-a298-07bea9042d7... | integer | jee-main-2022-online-25th-july-evening-shift | 500 |
1l6i6l8d2 | chemistry | basics-of-organic-chemistry | isomerism | <p>Total number of isomers (including stereoisomers) obtained on monochlorination of methylcyclohexane is ___________.</p> | [] | null | 12 | <p>Compounds formed on mono-chlorination of
methylcyclohexane are :</p><p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lc8l4iwt/9e7d76ee-882e-4c42-9a6f-7ada4599eded/1941e6d0-8731-11ed-806b-d74011098e63/file-1lc8l4iwu.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lc8l4iwt/9e... | integer | jee-main-2022-online-26th-july-evening-shift | 501 |
1l6jo3nj6 | chemistry | basics-of-organic-chemistry | isomerism | <p>Optical activity of an enantiomeric mixture is $$+12.6^{\circ}$$ and the specific rotation of $$(+)$$ isomer is $$+30^{\circ}$$. The optical purity is __________$$\%$$.</p> | [] | null | 42 | Optical purity $=\frac{\text { Total rotation }}{\text { Specific rotation }} \times 100$
<br/><br/>
$$
\begin{aligned}
&=\frac{12 \cdot 6}{30} \times 100 \\\\
&=42 \%
\end{aligned}
$$ | integer | jee-main-2022-online-27th-july-morning-shift | 502 |
1l6rkuvge | chemistry | basics-of-organic-chemistry | isomerism | <p>Given below are two statements.</p>
<p>Statement I : The compound <img src="data:image/png;base64,UklGRp4LAABXRUJQVlA4IJILAABwqACdASqUAQADP4HA22U2MLsnIfH5Q2AwCWlu/GwXgc4elXRkp1+h/9t/eOvx5b/imJ//K/8tni7ZflBPf2Vl//D/6KNVP3Mf//gO//8PfsI0qeuI0SydAl8HArnKRLMDjd2+VlyT8Fbdv//A7nVIzsRqvcDkZpEyvwn2p80mkiVJ5K+tCfF9ZRmvcDylAu4... | [{"identifier": "A", "content": "Both Statement I and Statement II are correct."}, {"identifier": "B", "content": "Both Statement I and Statement II are incorrect."}, {"identifier": "C", "content": "Statement I is correct but Statement II is incorrect."}, {"identifier": "D", "content": "Statement I is incorrect but Sta... | ["C"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7nqbxfn/23f059cc-8628-4a7d-b146-5c6d7064f40d/21a1f530-2c88-11ed-a521-1f85f535c206/file-1l7nqbxfo.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7nqbxfn/23f059cc-8628-4a7d-b146-5c6d7064f40d/21a1f530-2c88-11ed-a521-1f85f535c206/fi... | mcq | jee-main-2022-online-29th-july-evening-shift | 503 |
1ldukubxv | chemistry | basics-of-organic-chemistry | isomerism | <p>Which of the following conformations will be the most stable?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1ldvbpdhy/0695ff1e-84d3-4bb7-aefd-1578a9f52d6b/8017ba70-a77e-11ed-a5e3-ff739bca566a/file-1ldvbpdhz.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1ldvbpdhy/0695ff1e-84d3-4bb7-aefd-1578a9f52d6b/801... | ["A"] | null | Conformation <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1ldvbpdhy/0695ff1e-84d3-4bb7-aefd-1578a9f52d6b/8017ba70-a77e-11ed-a5e3-ff739bca566a/file-1ldvbpdhz.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1ldvbpdhy/0695ff1e-84d3-4bb7-aefd-1578a9f52d6b/8017ba70-a77e-11ed-a5e3-ff... | mcq | jee-main-2023-online-25th-january-morning-shift | 505 |
lsap6gz4 | chemistry | basics-of-organic-chemistry | isomerism | Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is _______ . | [] | null | 6 | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lsc7wqqe/db5fdf97-a5b3-472d-8eab-4849087301a7/02cebf60-c5f4-11ee-aa4b-f71eea116538/file-6y3zli1lsc7wqqf.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lsc7wqqe/db5fdf97-a5b3-472d-8eab-4849087301a7/02cebf60-c5f4-11ee-aa... | integer | jee-main-2024-online-1st-february-evening-shift | 506 |
jaoe38c1lsc6lz03 | chemistry | basics-of-organic-chemistry | isomerism | <p>3-Methylhex-2-ene on reaction with $$\mathrm{HBr}$$ in presence of peroxide forms an addition product (A). The number of possible stereoisomers for '$$\mathrm{A}$$' is ________.</p> | [] | null | 4 | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lscvu2qc/e0ce7a11-d8d7-434f-a962-8fbf6b21ed37/93bf9140-c651-11ee-9d8b-f1be86a1b2f3/file-6y3zli1lscvu2qd.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lscvu2qc/e0ce7a11-d8d7-434f-a962-8fbf6b21ed37/93bf9140-c651-11ee-9d... | integer | jee-main-2024-online-27th-january-morning-shift | 508 |
jaoe38c1lscrvirz | chemistry | basics-of-organic-chemistry | isomerism | <p>The incorrect statement regarding conformations of ethane is :</p> | [{"identifier": "A", "content": "The dihedral angle in staggered conformation is $$60^{\\circ}$$.\n"}, {"identifier": "B", "content": "Ethane has infinite number of conformations.\n"}, {"identifier": "C", "content": "Eclipsed conformation is the most stable conformation.\n"}, {"identifier": "D", "content": "The conform... | ["C"] | null | <p>The statement regarding conformations of ethane that is incorrect is:</p>
<p>Option C - Eclipsed conformation is the most stable conformation.</p>
<p>To explain why Option C is incorrect, let's analyze all the options:</p>
<p>Option A: "The dihedral angle in staggered conformation is $$60^{\circ}$$."
This statemen... | mcq | jee-main-2024-online-27th-january-evening-shift | 509 |
jaoe38c1lscs5lq4 | chemistry | basics-of-organic-chemistry | isomerism | <p>Total number of compounds with Chiral carbon atoms from following is _________.</p>
<p><img src="data:image/png;base64,UklGRmohAABXRUJQVlA4IF4hAACQigGdASrhAgADP4G41mU2LawnIZE6SsAwCWlu/DJXKVAvxr17avnb/q/4L2NfOvuZ5e6xXC38R2cX//sA+o/yX+V/v/49ntzwh3B3nP0ZZPb2e//vTR97C0ec5zwEYXVDy93d3d3d3d3d3d3d3d3d3d3d3d3XRQu7msw+U+v4r8... | [] | null | 5 | <p>Chiral carbons are marked by,</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lt1p2b1f/7bb281fb-8ad2-444a-8494-1d1dc6497fb1/b0f86b30-d3f6-11ee-8d6b-33dde4413c62/file-1lt1p2b1g.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lt1p2b1f/7bb281fb-8ad2-444a-8494-1d1dc6497fb1... | integer | jee-main-2024-online-27th-january-evening-shift | 510 |
jaoe38c1lsda1na4 | chemistry | basics-of-organic-chemistry | isomerism | <p>Number of isomeric products formed by monochlorination of 2-methylbutane in presence of sunlight is ________.</p> | [] | null | 6 | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lskmmmvy/03e6217e-9057-4db0-86ef-6e21b18cf28e/d7e0c7e0-ca93-11ee-9a3e-d72ae7e965b7/file-6y3zli1lskmmmvz.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lskmmmvy/03e6217e-9057-4db0-86ef-6e21b18cf28e/d7e0c7e0-ca93-11ee... | integer | jee-main-2024-online-31st-january-evening-shift | 511 |
jaoe38c1lsfp940l | chemistry | basics-of-organic-chemistry | isomerism | <p>Which one of the following will show geometrical isomerism?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lsga4pa3/c9e6bbfd-8dbe-4c69-9c46-39e6dd67eb44/d503acb0-c82f-11ee-8c6b-bfa4f1fff66a/file-6y3zli1lsga4pa4.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/6y3zli1lsga4pa3/c9e6bbfd-8dbe-4c69-9c4... | ["A"] | null | <p>Due to unsymmetrical.</p> | mcq | jee-main-2024-online-29th-january-evening-shift | 512 |
1lsg86sv4 | chemistry | basics-of-organic-chemistry | isomerism | <p>Number of geometrical isomers possible for the given structure is/are _________.</p>
<p><img src="data:image/png;base64,UklGRm4KAABXRUJQVlA4IGIKAADQsQCdASoAA/EBP4HA22Y2MS2nITSo6sAwCWlu4W2kcmNwvj6t9H3QXzF/DcG/z89mf5L/Bfvn0TcGtX/1AKv38r9/8hT//hXmfeHOOcc45xzjnHOOcc45sz1Pkgt2z087cAZqfRhkZcDtQUoJQEm+TfJvk3yb5N8m+TfJvidoZ... | [] | null | 4 | <p>3 stereocenteres, symmetrical</p>
<p>Total Geometrical isomers $$\rightarrow 4$$. EE, ZZ, EZ (two isomers)</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lspv9dhj/7d03a440-f969-4eef-a547-720cc4931426/8481c970-cd75-11ee-9be1-85ca54b9efcb/file-6y3zli1lspv9dhk.png?format=png" data-orsrc="... | integer | jee-main-2024-online-30th-january-evening-shift | 513 |
lv40vbl9 | chemistry | basics-of-organic-chemistry | isomerism | <p>The number of optically active compounds from the following is _________.</p>
<p><img src="data:image/png;base64,UklGRgwdAABXRUJQVlA4IAAdAACwjgCdASoAA6QAPm00l0ekIyIhJtLqMIANiWlu/EsZF8mtf0DwngfGX9s7U/8j4r+Jz2noJZN/Rv7D/U+hv8r+3P6f83vYX/peB/ya/vfUF9cf5z7fPVh2UgAfyT+v/8T+/eM7/o+h/2W/6PuAfmbxrXmX7E/AJ/Q/8n+yvuz/33/x/2n+... | [] | null | 1 | <p>The optically active compound is :</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lwn6vqtn/d1460e45-21f8-480d-8bca-981446f9e8e6/7a9925b0-1b2d-11ef-bfb4-09691a8b304d/file-6y3zli1lwn6vqto.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lwn6vqtn/d1460e45-21f8... | integer | jee-main-2024-online-8th-april-evening-shift | 516 |
lv5gt4y9 | chemistry | basics-of-organic-chemistry | isomerism | <p>The number of optical isomers in following compound is : __________.</p>
<p><img src="data:image/png;base64,UklGRiAOAABXRUJQVlA4IBQOAADQ2QCdASoAAxUCP4HA22U2MT+nIpPpI/AwCWlu8p+3+d50Q52dff7P/7D78vnL8R/i/8t5g/ifYwYu/pfET+X/+TPp2T/iv8B++fRVRIdf/MM//+pRWl/6f5D//8BX//CEHcdaVRbMAeOtKotmAPHWlUWzAHjrSnpVsRvAcMDklWxG8BwwOSVbE... | [] | null | 32 | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/jaoe38c1lw94gaky/b727044e-2fe7-418b-823a-2116d7e23c04/01909720-1371-11ef-ac66-753153db1bf0/file-jaoe38c1lw94gakz.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/jaoe38c1lw94gaky/b727044e-2fe7-418b-823a-2116d7e23c04/01909720-1371-1... | integer | jee-main-2024-online-8th-april-morning-shift | 517 |
lv7v3tyj | chemistry | basics-of-organic-chemistry | isomerism | <p>Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).</p>
<p>Assertion (A) : Cis form of alkene is found to be more polar than the trans form.</p>
<p>Reason (R) : Dipole moment of trans isomer of 2-butene is zero.</p>
<p>In the light of the above statements, choos... | [{"identifier": "A", "content": "(A) is true but (R) is false"}, {"identifier": "B", "content": "(A) is false but (R) is true"}, {"identifier": "C", "content": "Both $$(\\mathbf{A})$$ and $$(\\mathbf{R})$$ are true and $$(\\mathbf{R})$$ is the correct explanation of $$(\\mathbf{A})$$"}, {"identifier": "D", "content": "... | ["C"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lwh47pai/b2c4af5c-3731-44d4-af3e-55bd0c508fd2/57d742a0-17d6-11ef-a722-71ab49de2419/file-1lwh47paj.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lwh47pai/b2c4af5c-3731-44d4-af3e-55bd0c508fd2/57d742a0-17d6-11ef-a722-71ab49de2419... | mcq | jee-main-2024-online-5th-april-morning-shift | 518 |
lvb2a7zg | chemistry | basics-of-organic-chemistry | isomerism | <p>The incorrect statement regarding the geometrical isomers of 2-butene is :</p> | [{"identifier": "A", "content": "cis-2-butene and trans-2-butene are not interconvertible at room temperature.\n"}, {"identifier": "B", "content": "trans-2-butene is more stable than cis-2-butene.\n"}, {"identifier": "C", "content": "cis-2-butene has less dipole moment than trans-2-butene.\n"}, {"identifier": "D", "con... | ["C"] | null | <p>Let's analyze each statement to determine which one is incorrect regarding the geometrical isomers of 2-butene.</p>
<p><strong>Option A:</strong> "Cis-2-butene and trans-2-butene are not interconvertible at room temperature."</p>
<p>This statement is correct. Cis and trans isomers of 2-butene are not readily inter... | mcq | jee-main-2024-online-6th-april-evening-shift | 520 |
lvc58eo1 | chemistry | basics-of-organic-chemistry | isomerism | <p>Which of the following is metamer of the given compound (X) ?</p>
<p><img src="data:image/png;base64,UklGRnQIAABXRUJQVlA4IGgIAAAQiACdASoAA0YBP4HA2mU2MK0nIrGZSsAwCWlu4WdzbmNwvV6q3UWLXOfYhfyqn/68zH2WTYgE7ICdkBOyAmNrl8ZjtlaYOk9r4SHju9ZUybEAnUWzWazWazWazWazWazWajm2Mk43Txb7zERr5RKKSSSSSSSSyxqcKbt6GPq654kotms1ms1msp3F4qmW... | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1lvc3988c/cbb61d32-beae-4546-978a-34e60e003cb1/768682c0-0146-11ef-9994-d5a6f8729fd1/file-1lvc3988d.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1lvc3988c/cbb61d32-beae-4546-978a-34e60e003cb1/768... | ["C"] | null | <p>Compound given is option (2) is metamer of compound "$$\mathrm{X}$$".</p> | mcq | jee-main-2024-online-6th-april-morning-shift | 521 |
RURpxpet0gEFQdga | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name of CH<sub>3</sub>COCH(CH<sub>3</sub>)<sub>2</sub> is | [{"identifier": "A", "content": "2-methyl-3-butaone"}, {"identifier": "B", "content": "4-methylisopropyl 1 ketone"}, {"identifier": "C", "content": "3-methyl-2-butaone"}, {"identifier": "D", "content": "Isopropylmethyl ketone"}] | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265894/exam_images/fsoxluh01shuv3vlg9p3.webp" loading="lazy" alt="AIEEE 2003 Chemistry - Basics of Organic Chemistry Question 234 English Explanation"> | mcq | aieee-2003 | 523 |
Mk5jgnA61bJlM8Yp | chemistry | basics-of-organic-chemistry | iupac-nomenclature | Which one the following does not have sp<sup>2</sup> hybridized carbon? | [{"identifier": "A", "content": "Acetone"}, {"identifier": "B", "content": "Acetamide"}, {"identifier": "C", "content": "Acetonitrile"}, {"identifier": "D", "content": "Acetic acid"}] | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263305/exam_images/mubvlnft82m0dngmg1z3.webp" loading="lazy" alt="AIEEE 2004 Chemistry - Basics of Organic Chemistry Question 230 English Explanation"> | mcq | aieee-2004 | 524 |
Lssyvog6hKiKR4Zo | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The $$IUPAC$$ name of the compound shown below is :
<br/><br/><img src="data:image/png;base64,UklGRtoFAABXRUJQVlA4IM4FAACQWQCdASoAAzIBP4HA2mc2MK0noLLYcsAwCWlu4XXl7mNwvj5O/wH6AeWPWirDOAn2A7TW9WFRZXn6V/V//oKTGmrrMvF6aausy8Xppq6zLxemmrrMvF6aausy8W2m/QYEUtxemmrrMvF6aausy8Xppq6zLxeVSTfZ/qll8kM+32gLummrrMvF6aausy8Xppq6zLxem... | [{"identifier": "A", "content": "$$3$$-bromo - $$1$$-chlorocyclohexene"}, {"identifier": "B", "content": "$$1$$-bromo - $$3$$-chlorocyclohexene"}, {"identifier": "C", "content": "$$2$$-bromo - $$6$$-chlorocyclohex - $$1$$ -ene "}, {"identifier": "D", "content": "$$6$$-bromo - $$2$$ - chlorocyclohexene "}] | ["A"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263712/exam_images/xfzzsag7dnngsnk7buos.webp" loading="lazy" alt="AIEEE 2006 Chemistry - Basics of Organic Chemistry Question 198 English Explanation"> | mcq | aieee-2006 | 526 |
UKX0cld2R8CJm9la | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <img src="data:image/png;base64,UklGRvASAABXRUJQVlA4IOQSAADQXwCdASoAA60APm02l0kkIqIhIjLJOIANiWlu4XPxG/OT8n/2X8b/CX+s/kn58+Lj01+xfs7ybIlny77YfcP7R6C/8/wX+U3996gX4z/GP6t+Sf964gfZvMF9a/pX+a/vP5Y+oB8y+pXiA/mT66d59+E/6XsDf0T/Aeqz/R/tp5xP0f/Qf/P/TfAP/Lv7d/y/uZ8Bn7ue0AJxP9BUWzAJJjSqLZgEkxpVFswCSY0qi2YBJMaVRbMAkmNKotl/wzN3Ekfl... | [{"identifier": "A", "content": "$$3$$ - enthyl - $$4$$ - $$4$$ - dimethylheptane"}, {"identifier": "B", "content": "$$1,1$$ - diethyl - $$2,2$$ - dimethylpentane "}, {"identifier": "C", "content": "$$4, 4$$ - dimethyl -$$5,5$$ - diethylpentane"}, {"identifier": "D", "content": "$$5,5$$ - diethyl - $$4,4$$ - dimethylpe... | ["A"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264705/exam_images/l1ff3ympu7chuiojyvnu.webp" loading="lazy" alt="AIEEE 2007 Chemistry - Basics of Organic Chemistry Question 192 English Explanation"> | mcq | aieee-2007 | 527 |
X30jgEuwFky5NkuYFTGnb | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The hydrocarbon with seven carbon atoms containing a neopentyl and a vinyl group
is : | [{"identifier": "A", "content": "2, 2-dimethyl-4-pentene "}, {"identifier": "B", "content": "Isopropyl-2-butene"}, {"identifier": "C", "content": "4, 4-dimethylpentene"}, {"identifier": "D", "content": "2, 2-dimethyl-3-pentene"}] | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266429/exam_images/nh9rx6azef50t7pezc6j.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2016 (Online) 9th April Morning Slot Chemistry - Basics of Organic Chemistry Question 181 English Explanation"... | mcq | jee-main-2016-online-9th-april-morning-slot | 530 |
kKSzvTNg693p2ShRcXZEx | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name of the following compound is :
<br/><br/><img src="data:image/png;base64,UklGRmwIAABXRUJQVlA4IGAIAAAwmQCdASoAA9YBP4HA3WW2Ma4nIdSomsAwCWlu8p9XgMveTfRkp6+ov0T7A/nDBPf8DP72T/hn8dzXMablvH/60tVf+w/nP//wH//+FHP9Ky1XLd7JpIxVwtn4jSRjxGkjHiNJGPEaR4/yoKSb1CvG3uAnafWZVF+dZjIA8HUB5axjxGkjHiNJGPEZjl+VBSGIEXjU9hbN/ny... | [{"identifier": "A", "content": "1, 1-Dimethyl-2-ethylcylohexane"}, {"identifier": "B", "content": "2-Ethyl-1, 1-dimethylcyclohexane"}, {"identifier": "C", "content": "1-Ethyl-2,2-dimethylcyclohexane"}, {"identifier": "D", "content": "2, 2-Dimethyl-1-ethylcycohexane "}] | ["B"] | null | <p>The IUPAC name of the compound shown is 2-Ethyl-1,1-dimethylcyclohexane</p>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l42nzryp/bc83861a-4f66-4c2c-b79b-6f522e32dc5f/e1aa0c10-e58d-11ec-be68-e5a641868684/file-1l42nzryq.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l42nzr... | mcq | jee-main-2017-online-8th-april-morning-slot | 531 |
kTb3NBX2BJd70norEsRoE | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name of the following compound is :
<br/><br/><img src="data:image/png;base64,UklGRrYIAABXRUJQVlA4IKoIAACwrACdASoAAwkCP4HA32Y2Ma8nIZXYcsAwCWlu4XExG/Pz9T/rl7hr3FjrYT37eefsp+GM/+r/9QCt/7nez/CHddN5V7OEALNq9nB/1+5k/7h3XTeVezhACwIPYP9sX6Yfww9hB7B/tiiIje4/n7OEALNq9l2wg9g/2xfph/DD2EHsH+ufTAQc4G83lXs4QAsyUxfph/DD2EH... | [{"identifier": "A", "content": "4-methyl-3-ethylhex-4-ene"}, {"identifier": "B", "content": "3-ethyl-4-methylhex-4-ene"}, {"identifier": "C", "content": "4-ethyl-3-methylhex-2-ene"}, {"identifier": "D", "content": "4, 4- diethyl-3-methylbut-2-ene"}] | ["C"] | null | <p>The IUPAC name of the compound is 4-ethyl-3-methyl-hex-2-ene.</p>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3qtgtmw/0af9b901-5f7b-4f9d-913c-4176bd377a20/e1906880-df09-11ec-b17a-f1edf5965e5d/file-1l3qtgtmx.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l3qtgtmw/0af9b90... | mcq | jee-main-2018-online-15th-april-morning-slot | 532 |
ykqyhM6Q87zwJUZhpEoo4 | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name of the following compound is :<br/>
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265290/exam_images/utzhkwurc9fnf3gk5ueu.webp"/><img src="data:image/png;base64,UklGRuwOAABXRUJQVlA4IOAOAABwcgCdASqoAtIAPm02mUikIyKhIhFJgIANiWlu/DkX9Cz/QBUsTMudQxv... | [{"identifier": "A", "content": "3-Hydroxy-4-methylpentanoic acid"}, {"identifier": "B", "content": "4,4-Dimethyl-3-hydroxybutanoic acid"}, {"identifier": "C", "content": "2-Methyl-3-hydroxypentan-5-oic acid"}, {"identifier": "D", "content": "4-Methyl-3-hydroxypentanoic acid"}] | ["A"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264237/exam_images/mxbydthguhpfivriot7h.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265182/exam_images/sohnkdsblmhc99mh3a7d.webp"><img src="https://res.c... | mcq | jee-main-2019-online-8th-april-morning-slot | 534 |
DcVAYxuPVcUrgcnZ3H3ib | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The correct IUPAC name of the following
compound is :
<img src="data:image/png;base64,UklGRqYLAABXRUJQVlA4IJoLAAAwkwCdASrsArsBP4HA3GY2MS2nIVK4ksAwCWlu4W3BG/P586f6LHY8Gf0G6s7Fdq39Dt+AJsyOP2ZhoPP//flF/hd+oE/7cz7cz7cz7cz7cz7cz7cz7cz7cz1v8sPHP8sPHP/yzIg0xdlA45/lh45/lh5jyw8c/yw8c/ywwnHkl3rQdSsfLXBd6EqvQWGMBElrnQB7KjyEDTF2UD... | [{"identifier": "A", "content": "2-methyl-5-nitro-1-chlorobenzene"}, {"identifier": "B", "content": "2-chloro-1-methyl-4-nitrobenzene"}, {"identifier": "C", "content": "3-chloro-4-methyl-1-nitrobenzene"}, {"identifier": "D", "content": "5-chloro-4-methyl-1-nitrobenzene"}] | ["B"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264771/exam_images/l3moj5qtcoskjr3yjy4d.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265426/exam_images/kp51wak1v150riptpvjt.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | jee-main-2019-online-9th-april-morning-slot | 535 |
TpUyyaRxkDTdWFmbOX3rsa0w2w9jx8055fs | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name for the following compound is :
<img src="data:image/png;base64,UklGRm4IAABXRUJQVlA4IGIIAAAQUwCdASrsAvEAP4G812a2LiqnoNKIusAwCWlu4XYBG/Pz8UdpOOzZ3dhu1Z+lW/FgA/LPOr+J8zv8r0ecL6eI7vv7/v0wmX6DmwfSW7SW7SW7Gbojigt23J9JbtJbtJbtJbtJbtJbtJbtJbtJFkCB4poGpUrXyHTH9K/tl6fBT79BzYPpLdpLdpLdpLdpLceYqDHIsrtU+Cn36DmwfSW7S... | [{"identifier": "A", "content": "3, 5-dimethyl-4-propylhept-1-en-6-yne"}, {"identifier": "B", "content": "3-methyl-4-(3-methylprop-1-enyl)-1-heptyne"}, {"identifier": "C", "content": "3-methyl-4-(1-methylprop-2-enyl)-1-heptene"}, {"identifier": "D", "content": "3,5-dimethyl-4-propylhept-6-en-1-yne"}] | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266059/exam_images/szacosq31joajsatbdry.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2019 (Online) 12th April Evening Slot Chemistry - Basics of Organic Chemistry Question 160 English Explanation... | mcq | jee-main-2019-online-12th-april-evening-slot | 536 |
eNmOk3cHKhEQx4fD8Tjgy2xukg3811s7 | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name of the following compound is :
<img src="data:image/png;base64,UklGRi4JAABXRUJQVlA4ICIJAADwOwCdASr7AM4APm02mEgkIyKhJvVY+IANiWlu4XKRG/N18G/xT8R/Ab+vdDz5V9sv696+v8V0iF8/+D/kf7g+o3+t/hfjP71NQv0//YP45+x/9U/dL2h/ot+s3hSAD+kH+Z/hP9C/Vzzlf7H+Rf2X2K+onsAfqp+mv8y8gDyN++v0A9Zf/A/qv9S/aP35v+T+E/1T9pvaz81/+b+Mf3r3RP... | [{"identifier": "A", "content": "2-nitro-4-hydroxymethyl-5-amino benzaldehyde"}, {"identifier": "B", "content": "3-amino-4-hydroxymethyl-5-nitro benzaldehyde"}, {"identifier": "C", "content": "4-amino-2-formyl-5-hydroxymehtyl nitrobenzene"}, {"identifier": "D", "content": "5-amino-4-hydroxymethyl-2-nitro benzaldehyde"}... | ["D"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264123/exam_images/a11eut3cqaeon2ny8obi.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Basics of Organic Chemistry Question 145 English Explanatio... | mcq | jee-main-2020-online-6th-september-evening-slot | 537 |
bdCPur6v1dKOnfrSZmjgy2xukf91oyar | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name of the following compound is :
<img src="data:image/png;base64,UklGRvIIAABXRUJQVlA4IOYIAAAwQgCdASpZAdUAPm02mEkkIyKhIbIJoIANiWlu4W+zqmNwrn4d/in5D+AX9v/nf3JeZL55+7/kp6U/oBr9Xxv8i/qP6wev3+b/i/kL70fgDzK/3v+Jf0H/Qf030s/6X+MfzPwgIAPFZ/of43/NvHy/of436gdxv+gHnZ/oB5nVAr8nf9T+PenT/yfwr+cftL7gPnb9E/7n7pP/H/hn9H/Xb5... | [{"identifier": "A", "content": "3-Bromo-5-methylcyclopentane carboxylic\nacid"}, {"identifier": "B", "content": "3-Bromo-5-methylcyclopentanoic acid"}, {"identifier": "C", "content": "4-Bromo-2-methylcyclopentane carboxylic\nacid"}, {"identifier": "D", "content": "5-Bromo-3-methylcyclopentanoic acid"}] | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267215/exam_images/cffadboc97unel5occfj.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Basics of Organic Chemistry Question 149 English Explanatio... | mcq | jee-main-2020-online-4th-september-morning-slot | 538 |
QYwru3oZrKqa5TggNXjgy2xukevk4ooe | chemistry | basics-of-organic-chemistry | iupac-nomenclature | The IUPAC name for the following compound
is
<img src="data:image/png;base64,UklGRioOAABXRUJQVlA4IB4OAACwYgCdASr0AQIBPm02mEkkIqKhIhLZQIANiWlu/HyZN+tQxv0g/qn8x9W/fl9v/rX7Qf2PtIfRH6T+0/9d9pr+q/ifOAd3B79/B/6j8Bvz3/O/yr+ZeWPAR9Of4H+Gf03/Y+gf9Je7bqr/s/5v4w/8n/Jf59/2v7b8OHrv+9/m39Y9ouwO/pvpFfpb5ZXmv6c+uz9CP7r8R/7B/1P4r/Q/3X9... | [{"identifier": "A", "content": "2, 5-dimethyl-6-carboxy-hex-3-enal"}, {"identifier": "B", "content": "6-formyl-2-methyl-hex-3-enoic acid"}, {"identifier": "C", "content": "2, 5-dimethyl-5-carboxy-hex-3-enal"}, {"identifier": "D", "content": "2, 5-dimethyl-6-oxo-hex-3-enoic acid"}] | ["D"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266076/exam_images/y0l24ottku9o60rno78o.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Basics of Organic Chemistry Question 153 English Explanatio... | mcq | jee-main-2020-online-2nd-september-morning-slot | 539 |
1l55nfsf9 | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>The correct IUPAC name of the following compound is :</p>
<p> <img src="data:image/png;base64,UklGRjgIAABXRUJQVlA4ICwIAADwdwCdASoAA0ABP4G812Y2LqwnIZBZGsAwCWlu4WxC9mNwvV5y/0/WssavPj2Z/j37xonoAPv36dlWv3R///gRf/0Nfyt2bVwNxlAiUElMEEdEP+zauOs2rjrNq46zUXFjNucdpkjj6YKBjw/TbT8FxYzbnHafguLGdwdp+C4sZtCkcdZtV2au9cWM25x2n4Lixm3... | [{"identifier": "A", "content": "4-methyl-2-nitro-5-oxohept-3-enal"}, {"identifier": "B", "content": "4-methyl-5-oxo-2-nitrohept-3-enal"}, {"identifier": "C", "content": "4-methyl-6-nitro-3-oxohept-4-enal"}, {"identifier": "D", "content": "6-formyl-4-methyl-2-nitrohex-3-enal"}] | ["C"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l99vd8l8/39c1d737-ea35-4e49-930a-33c944d47589/495edfc0-4c81-11ed-aba3-e33a2f44b599/file-1l99vd8l9.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l99vd8l8/39c1d737-ea35-4e49-930a-33c944d47589/495edfc0-4c81-11ed-aba3-e33a2f44b599/fi... | mcq | jee-main-2022-online-28th-june-evening-shift | 541 |
1l5am41p7 | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>The IUPAC name of ethylidene chloride is :</p> | [{"identifier": "A", "content": "1-Chloroethene"}, {"identifier": "B", "content": "1-Chloroethyne"}, {"identifier": "C", "content": "1,2-Dichloroethane"}, {"identifier": "D", "content": "1,1-Dichloroethane"}] | ["D"] | null | <p>Ethylidene chloride is CH<sub>3</sub>– CHCl<sub>2</sub>, its IUPAC name is 1,1-Dichloromethane.</p> | mcq | jee-main-2022-online-25th-june-morning-shift | 542 |
1lgyrs4ck | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>The correct IUPAC nomenclature for the following compound is:</p>
<p><img src="data:image/png;base64,UklGRlwKAABXRUJQVlA4IFAKAADwkACdASoAA0IBP4HA3GS2MS2nIvK5GsAwCWlu/B23nXmHZ19/sd6NbkQ9Rn17WZk5v/0FDJf/+7/8RZaVTGSZbtMHXr13OMOLlPoazbUUqmNtRSqY21FKpjbUUp+2fU8z1OUnRvl6oW9nVbKoWz6nmg8opRbPqeaDyilFs+p5prZ9TzQaxMXRLyctO0ld... | [{"identifier": "A", "content": "2 - Formyl -5-methylhexan-6-oic acid"}, {"identifier": "B", "content": "5-Methyl-2-oxohexan-6-oic acid"}, {"identifier": "C", "content": "5-Formyl -2-methylhexanoic acid"}, {"identifier": "D", "content": "2-Methyl-5-oxohexanoic acid"}] | ["D"] | null | IUPAC name of the following compound is<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1liyp55s1/c7ea1d55-9c26-47dc-9969-0039f12b3a0b/7c98bf10-0c56-11ee-9386-675fa4f17251/file-6y3zli1liyp55s2.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1liyp55s1/c7ea1d55-9... | mcq | jee-main-2023-online-8th-april-evening-shift | 544 |
jaoe38c1lsc60enk | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>IUPAC name of following compound (P) is:</p>
<p><img src="data:image/png;base64,UklGRv4KAABXRUJQVlA4IPIKAACwzACdASoAA18CP4HA32W2Mi8nIfcIisAwCWlu4W8EwmNwvj6U/Uv2s3ebGOxmwG/+3L8yU/G/2/98r4C8/+rdW59zf//3/4UMymupQHoRlNdSgPQjKa6lAehGU11JF4y9fVFHsav9KG2Fjl6EBSg6zpwu6dYXoQFKG2Fjl6EBShtkyoQ6LdxA+x2tb1a/Pl+LBTCxy9CApQdZQTZNc... | [{"identifier": "A", "content": "l-Ethyl-5, 5-dimethylcyclohexane\n"}, {"identifier": "B", "content": "3-Ethyl-1,1-dimethylcyclohexane\n"}, {"identifier": "C", "content": "l-Ethyl-3, 3-dimethylcyclohexane\n"}, {"identifier": "D", "content": "1,1-Dimethyl-3-ethylcyclohexane"}] | ["B"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lscvnmzm/2ffd0bac-4b3c-4055-90bc-788c20d59aa9/e0bba020-c650-11ee-9d8b-f1be86a1b2f3/file-6y3zli1lscvnmzn.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lscvnmzm/2ffd0bac-4b3c-4055-90bc-788c20d59aa9/e0bba020-c650-11ee-9d... | mcq | jee-main-2024-online-27th-january-morning-shift | 545 |
jaoe38c1lscrxwbc | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>Bond line formula of HOCH(CN)$$_2$$ is :</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lsd38o13/21e9e147-2957-4c9f-8860-61d5a6e34ab6/896edb70-c66e-11ee-9e75-ed145f26bf63/file-6y3zli1lsd38o14.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/6y3zli1lsd38o13/21e9e147-2957-4c9f-886... | ["D"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lt1n7ivk/e12d406f-ea55-43b5-9921-dd1053fd7f26/6fcfd500-d3ef-11ee-8d6b-33dde4413c62/file-1lt1n7ivl.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lt1n7ivk/e12d406f-ea55-43b5-9921-dd1053fd7f26/6fcfd500-d3ef-11ee-8d6b-33dde4413c62... | mcq | jee-main-2024-online-27th-january-evening-shift | 546 |
jaoe38c1lse7tehh | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>Given below are two statements:</p>
<p>Statement I: IUPAC name of $$\mathrm{HO}-\mathrm{CH}_2-\left(\mathrm{CH}_2\right)_3-\mathrm{CH}_2-\mathrm{COCH}_3$$ is 7-hydroxyheptan-2-one.</p>
<p>Statement II: 2-oxoheptan-7-ol is the correct IUPAC name for above compound. In the light of the above statements, choose the mos... | [{"identifier": "A", "content": "Statement I is incorrect but Statement II is correct.\n"}, {"identifier": "B", "content": "Statement I is correct but Statement II is incorrect.\n"}, {"identifier": "C", "content": "Both Statement I and Statement II are correct.\n"}, {"identifier": "D", "content": "Both Statement I and ... | ["B"] | null | <p>7-Hydroxyheptan-2-one is correct IUPAC name</p> | mcq | jee-main-2024-online-31st-january-morning-shift | 548 |
jaoe38c1lsfml85h | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>According to IUPAC system, the compound</p>
<p><img src="data:image/png;base64,UklGRpoLAABXRUJQVlA4II4LAACQvQCdASoAAxkCP4HA3mU2Mi6nIha46sAwCWlu9T9kup31e4mi7f69/6z7//m542/c/Pn8K7I1r7zu9iv4b/H/v/0S0LHX/0Av13//6udd7/++/+QL//w111YaO5OReUgxObdiHcnJ3RDuTk7oh3Jyd0Q7k5O6HD3mXWjrf0InueoJGjbIj4oPEjYbdOTuiHcm6BakzeM7CxwADEVu4e... | [{"identifier": "A", "content": "Cyclohex-2-en-1-ol"}, {"identifier": "B", "content": "1-Hydroxyhex-2-ene"}, {"identifier": "C", "content": "Cyclohex-1-en-3-ol"}, {"identifier": "D", "content": "Cyclohex-1-en-2-ol"}] | ["A"] | null | <p>Cyclohex-2-en-1-ol</p> | mcq | jee-main-2024-online-29th-january-evening-shift | 549 |
1lsg7cpqp | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>IUPAC name of following compound is :</p>
<p><img src="data:image/png;base64,UklGRsgHAABXRUJQVlA4ILwHAAAQegCdASoAA/AAP4G+22M2ML+mJFOJk/AwCWlu4WxhG/PboKvNAF3O/bTMe0//Vch0lGT7G2ojrMCYiohAbSORmZqMw1mrifjhyGIjlibKVPFEjCiQjCHRgSrjIGXmvWeQVXM7W4vnfZ2p56tCTwURGDP7b5UBayn+ijx+eFkiW0YLG2kaZPjLEV2Y3AxL9ta7DyvJ056Fb58QwfzCOKNw... | [{"identifier": "A", "content": "2-Aminobutanenitrile\n"}, {"identifier": "B", "content": "3-Aminopropanenitrile\n"}, {"identifier": "C", "content": "2-Aminopentanenitrile\n"}, {"identifier": "D", "content": "3-Aminobutanenitrile"}] | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lspvaz1p/0b2941cd-de76-4cd9-939c-bae8f16b6ee7/b0f889d0-cd75-11ee-9be1-85ca54b9efcb/file-6y3zli1lspvaz1q.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lspvaz1p/0b2941cd-de76-4cd9-939c-bae8f16b6ee7/b0f889d0-cd75-11ee-9b... | mcq | jee-main-2024-online-30th-january-evening-shift | 550 |
lv2erjb4 | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>The total number of 'sigma' and 'pi' bonds in 2-oxohex-4-ynoic acid is ______.</p> | [] | null | 18 | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lwhtewdv/826a7638-b76c-470e-a9c1-d18f0bfc97a6/e4368c30-1838-11ef-9081-0ded966256d8/file-1lwhtewdw.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lwhtewdv/826a7638-b76c-470e-a9c1-d18f0bfc97a6/e4368c30-1838-11ef-9081-0ded966256d8... | integer | jee-main-2024-online-4th-april-evening-shift | 551 |
lv40vbj4 | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>IUPAC name of following hydrocarbon(X) is :</p>
<p><img src="data:image/png;base64,UklGRugVAABXRUJQVlA4INwVAABwdACdASoAA30APm0wlUgkIqIhJXBK4IANiWlu/D0AA6b+TKOq8Nf2Ttb/yP9q8j/HF5/9s+UBpo9Tf5H9p/2P9v/df49fwP+58L+AL+O/z//OeKfs2wAfl/9F/6395/xHl16qfgT/ne4B/PPO//meGx6d7Af8r/wf7OexJ/5/630JfVX/x/2HwIfz7+8/9n14fY3+5vtAfuqVkF... | [{"identifier": "A", "content": "2,5,6-Trimethyloctane\n"}, {"identifier": "B", "content": "2-Ethyl-2,6-diethylheptane\n"}, {"identifier": "C", "content": "3,4,7-Trimethyloctane\n"}, {"identifier": "D", "content": "2-Ethyl-3,6-dimethylheptane"}] | ["A"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lw58j809/0ea8edbe-af79-43c0-9bec-4e6cee0e3875/d4ec1390-114d-11ef-83ee-c535c7d7d388/file-1lw58j80a.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lw58j809/0ea8edbe-af79-43c0-9bec-4e6cee0e3875/d4ec1390-114d-11ef-83ee-c535c7d7d388... | mcq | jee-main-2024-online-8th-april-evening-shift | 552 |
lv5gt4zt | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>Given below are two statements :</p>
<p><img src="data:image/png;base64,UklGRoAVAABXRUJQVlA4IHQVAADQ5wCdASoAA/4BP4HA2GW2MCynIjMJSsAwCWlu/Gf5M5EnZ1+fql/r/Bp/B48+X/61/8fwL8/Pq8/9D1D34bg7z95lUguymm99/sIQFyY+QuGXj5C2TAl2CyWYFyN1fIXDLx8hcMvHyFwxttGq5oPKSVWvlKVPh+wy8hMGbAV2FL+d/oKgwzcXqSVW8armg8pJVbxquiC3jVc0HlJKpdMNodlwV... | [{"identifier": "A", "content": "Both Statement I and Statement II are incorrect.\n"}, {"identifier": "B", "content": "Both Statement I and Statement II are correct.\n"}, {"identifier": "C", "content": "Statement I is correct but Statement II is incorrect.\n"}, {"identifier": "D", "content": "Statement I is incorrect b... | ["D"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lw91ouhk/28fa78ec-326f-4289-80ef-f7acc5d812ec/3406fd80-1366-11ef-be09-0704d0bfee2a/file-1lw91ouhl.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lw91ouhk/28fa78ec-326f-4289-80ef-f7acc5d812ec/3406fd80-1366-11ef-be09-0704d0bfee2a... | mcq | jee-main-2024-online-8th-april-morning-shift | 553 |
lv9s2szh | chemistry | basics-of-organic-chemistry | iupac-nomenclature | <p>The correct nomenclature for the following compound is :</p>
<p><img src="data:image/png;base64,UklGRk4IAABXRUJQVlA4IEIIAABwdQCdASoAAyIBP4G62GY2LaynIbC5AsAwCWlu4Wd0SmNwvj6CxlHE/U+zydovyLVRFf/UUqg+6X//C/Xw26re7EO7FvdiHdi3uxC63MZ/k0xRWHgzsNuq3pxg0fnnafguMGj887T8Fxg0fnnW8MQKQ+11uKS5HLgCB814YNH552n4LjBo/PO0/BcYNH552g65X... | [{"identifier": "A", "content": "2-carboxy-4-hydroxyhept-7-enal\n"}, {"identifier": "B", "content": "2-formyl-4-hydroxyhept-7-enoic acid\n"}, {"identifier": "C", "content": "2-carboxy-4-hydroxyhept-6-enal\n"}, {"identifier": "D", "content": "2-formyl-4-hydroxyhept-6-enoic acid"}] | ["D"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lwf2r14d/b4eff064-5e79-4c9a-bd13-1174f45e703d/0dcba1d0-16b7-11ef-91c0-eff662e0b03e/file-1lwf2r14e.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lwf2r14d/b4eff064-5e79-4c9a-bd13-1174f45e703d/0dcba1d0-16b7-11ef-91c0-eff662e0b03e... | mcq | jee-main-2024-online-5th-april-evening-shift | 554 |
o8BmFj9gQsddtygX | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | For the estimation of nitrogen, 1.4 g of organic compound was digested by Kjeldahl method and the
evolved ammonia was absorbed in 60 mL of M/10 sulphuric acid. The unreacted acid required 20 ml of M/10
sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is: | [{"identifier": "A", "content": "3%"}, {"identifier": "B", "content": "5%"}, {"identifier": "C", "content": "6%"}, {"identifier": "D", "content": "10%"}] | ["D"] | null | $$\% \,\,$$ of $$\,\,N = {{1.4\,\, \times \,\,meq.of\,\,acid} \over {mass\,\,of\,\,organic\,\,compound}}$$
<br><br>meq. of $$\,\,{H_2}S{O_4} = 60 \times {M \over {10}} \times 2 = 12$$
<br><br>meq. of $$\,\,NaOH = 20 \times {M \over {10}} = 2$$
<br><br>$$\therefore$$ meq. of acid consumed $$ = 12 - 2 = 10$$
<br><br>... | mcq | jee-main-2014-offline | 555 |
8aPlaiwmP4fkNkrG | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The
percentage of bromine in the compound is: (at. Mass Ag = 108; Br = 80) | [{"identifier": "A", "content": "48"}, {"identifier": "B", "content": "60"}, {"identifier": "C", "content": "36"}, {"identifier": "D", "content": "24"}] | ["D"] | null | Mass of substance $$=250$$ $$mg$$ $$=0.250$$ $$g$$
<br><br>Mass of $$AgBr$$ $$=141$$ $$mg=0.141$$ $$g$$
<br><br>$$1$$ mole of $$AgBr$$ $$=1$$ $$g$$ atom of $$Br$$
<br><br>$$188$$ $$g$$ of $$AgBr$$ $$=80$$ $$g$$ of $$Br$$
<br><br>$$188$$ $$g$$ of $$AgBr$$ contain bromine $$=80$$ $$g$$
<br><br>$$0.141$$ $$g$$ of $$AgB... | mcq | jee-main-2015-offline | 556 |
UAvdtqeDjcJ5hPYW | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | The distillation technique most suited for separating glycerol from spent-lye in the soap industry is : | [{"identifier": "A", "content": "Simple distillation"}, {"identifier": "B", "content": "Fractional distillation"}, {"identifier": "C", "content": "Steam distillation"}, {"identifier": "D", "content": "Distillation under reduced pressure"}] | ["D"] | null | <p>The best technique for separating glycerol from spent-lye in the soap industry is Distillation under Reduced Pressure, also known as Vacuum Distillation (Option D).</p>
<p>The reason for this is that glycerol has a high boiling point (~$${290^ \circ }$$$$C$$). If we were to use simple or fractional distillation, whi... | mcq | jee-main-2016-offline | 557 |
mOFUQmvkIYxuqBaxsBxWQ | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Which of the following statements is not true about partition chromatography? | [{"identifier": "A", "content": "Mobile phase can be a gas"}, {"identifier": "B", "content": "Stationary phase is a finely divided solid adsorbent"}, {"identifier": "C", "content": "Separation depends upon equilibration of solute between a mobile and a stationary phase\n"}, {"identifier": "D", "content": "Paper chromat... | ["B"] | null | <p>In partition chromatography, which includes paper chromatography, the stationary phase is typically water held by cellulose fibers in the paper. This paper acts as an inert support. When a mixture is applied to the paper, its components partition between this stationary phase and the mobile phase (which can be a liq... | mcq | jee-main-2017-online-8th-april-morning-slot | 558 |
sGb013VC8ZxZJ8QY5nLpC | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which one of following is a correct statement ? | [{"identifier": "A", "content": "I moves faster and has higher R<sub>f</sub> value than II"}, {"identifier": "B", "content": "II movesfaster and has higher R<sub>f</sub> value than I"}, {"identifier": "C", "content": "I moves slower and has higher R<sub>f</sub> value than II"}, {"identifier": "D... | ["B"] | null | According to question,
<br><br>Absorption of I > II, it means I is firmly attached to column. Hence it will move slowly and move little distance. As II is loosely attached to column.
<br><br>So, it will move faster and will move larger distance. | mcq | jee-main-2018-online-15th-april-evening-slot | 559 |
FltkfgWFfsS8fciFtw8HF | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | The correct match between items of <b>List-I</b> and <b>List-II</b> is :
<br/><br/><style type="text/css">
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.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}
.tg... | [{"identifier": "A", "content": "(A)-(R), (B)-(S), (C)-(P), (D)-(Q)"}, {"identifier": "B", "content": "(A)-(R), (B)-(P), (C)-(S), (D)-(Q)"}, {"identifier": "C", "content": "(A)-(R), (B)-(P), (C)-(Q), (D)-(S)"}, {"identifier": "D", "content": "(A)-(P), (B)-(S), (C)-(R), (D)-(Q)"}] | ["C"] | null | (a) Charcoal treatment removes coloured impurity through adsorption.
<br><br>(b) Steam distillation separates the mixture of o-nitrophenol and p-nitrophenol. The o-nitrophenol is
steam volatile (due to intramolecular hydrogen bonding), and the para isomer is not volatile.
<br><br>(c) Fractional distillation separates c... | mcq | jee-main-2018-online-15th-april-morning-slot | 560 |
Tnkau2QUd25jR5XAj2ntT | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | If dichloromethane (DCM) and water (H<sub>2</sub>O) are used for differential extraction, which one of the following statements is correct ? | [{"identifier": "A", "content": "DCM and H<sub>2</sub>O would stay as upper and lower layer respectively in the separating funnel (S.F.)"}, {"identifier": "B", "content": "DCM and H<sub>2</sub>O will make turbid/colloidal mixture"}, {"identifier": "C", "content": "DCM and H<sub>2</sub>O would stay as lower and upper la... | ["C"] | null | Density of DCM = 1.39 and density of H<sub>2</sub>O = 1.0.
<p>Dichloromethane (DCM) is a denser solvent than water. Therefore, when a mixture of DCM and water is allowed to settle in a separating funnel, the DCM forms the lower layer due to its higher density, while the water forms the upper layer. The two solvents are... | mcq | jee-main-2019-online-10th-january-morning-slot | 561 |
DNOMaghnBzJKuD76hPsAH | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | The correct match between items I and II is :
<br/><br/><style type="text/css">
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.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}
.tg th{font-family:... | [{"identifier": "A", "content": "A$$ \\to $$(R); (B)$$ \\to $$(P); (C)$$ \\to $$(S)"}, {"identifier": "B", "content": "A$$ \\to $$(Q); (B)$$ \\to $$(R); (C)$$ \\to $$(S)"}, {"identifier": "C", "content": "A$$ \\to $$(Q); (B)$$ \\to $$(P); (C)$$ \\to $$(R)"}, {"identifier": "D", "content": "A$$ \\to $$(S); (B)$$ \\to $$... | ["B"] | null | <p>To find the correct match, let's understand what each separation method does :</p>
<ul>
<li><p>Sublimation : The process where a substance changes directly from a solid to a gas without passing through the liquid state. This method is not applicable to any mixtures here as all components are either liquid or sol... | mcq | jee-main-2019-online-11th-january-morning-slot | 562 |
q5tdJRSJHrKWKmX9wX3rsa0w2w9jwve0kga | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | The principle of column chromatography is : | [{"identifier": "A", "content": "Gravitational force."}, {"identifier": "B", "content": "Capillary action."}, {"identifier": "C", "content": "Differential adsorption of the substances on the solid phase."}, {"identifier": "D", "content": "Differential absorption of the substances on the solid phase. "}] | ["C"] | null | <p>The principle of column chromatography is based on the differential adsorption of substances on the solid phase. This means that different substances in a mixture will interact with the solid stationary phase to different extents. Some substances will adsorb more strongly to the solid phase and will therefore move m... | mcq | jee-main-2019-online-10th-april-morning-slot | 563 |
BRVJh4m9wYYt5bKNK97k9k2k5hl9t26 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Kjeldahl's method cannot be used to estimate
nitrogen for which of the following
compounds? | [{"identifier": "A", "content": "C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub>"}, {"identifier": "B", "content": "$${\\rm{N}}{{\\rm{H}}_2} - \\mathop C\\limits^{\\mathop \\parallel \\limits^O } - {\\rm{N}}{{\\rm{H}}_2}$$"}, {"identifier": "C", "content": "C<sub>6</sub>H<sub>5</sub>NO<sub>2</sub>"}, {"identifier": "D", "con... | ["C"] | null | Kjeldahl’s method is not applicable to
compounds containing nitrogen in nitro, azo
groups and nitrogen present in ring (pyridine). | mcq | jee-main-2020-online-8th-january-evening-slot | 565 |
q5oG6rGSA4bQHkIhuSjgy2xukf2b70jx | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Glycerol is separated in soap industries by : | [{"identifier": "A", "content": "Fractional distillation"}, {"identifier": "B", "content": "Distillation under reduced pressure"}, {"identifier": "C", "content": "Differential extraction"}, {"identifier": "D", "content": "Steam distillation"}] | ["B"] | null | Glycerol is separated in soap industries by distillation under reduced pressure. | mcq | jee-main-2020-online-3rd-september-morning-slot | 566 |
bkKIzgyVNxE2Xdmcgn7k9k2k5h3fkgm | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63<sup>o</sup>C while the
other boils at 60<sup>o</sup>C What is the best way to separate the two liquids and which one will be distilled out first ? | [{"identifier": "A", "content": "fractional distillation, 3-methylpentane"}, {"identifier": "B", "content": "simple distillation, 3-methylpentane"}, {"identifier": "C", "content": "fractional distillation, isohexane"}, {"identifier": "D", "content": "simple distillation, isohexane"}] | ["C"] | null | Isohexane and 3 Methylpentane Having same molecular formula.
<br><br>Isohexane boil at 60<sup>o</sup>C and 3-Methyl pentane boil at 63<sup>o</sup>C. Both Having low Boiling point difference so
Fractional distillation is useful for separation and Isohexane Having low Boiling point So comes out first. | mcq | jee-main-2020-online-8th-january-morning-slot | 567 |
GCy75AHnQ2I3vh5l357k9k2k5epxn0x | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | A chromatography column, packed with silica gel as stationary phase, was used to separate a
mixture of compounds consisting of (A) benzanilide (B) aniline and (C) acetophenone. When the
column is eluted with a mixture of solvents, hexane : ethylacelate (20:80), the sequence of
obtained compounds is : | [{"identifier": "A", "content": "(A), (B) and (C)"}, {"identifier": "B", "content": "(B), (A) and (C)"}, {"identifier": "C", "content": "(C), (A) and (B)\n"}, {"identifier": "D", "content": "(B), (C) and (A) "}] | ["C"] | null | <p>In column chromatography, we separate different parts of a mixture by washing it with solvents. The part of the mixture that gets most strongly attached to the moving solvent (or mobile phase) moves down the column quicker and comes out first. This is marked by a high Rf value. Other parts of the mixture follow in t... | mcq | jee-main-2020-online-7th-january-evening-slot | 568 |
yTKueDaZTjGERgKmFP1klucw2q7 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Given below are two statements :<br/><br/>Statement I : A mixture of chloroform and aniline can be separated by simple distillation.<br/><br/>Statement II : When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point.<br/><br/>In the light of the above stateme... | [{"identifier": "A", "content": "Both Statement I and Statement II are true"}, {"identifier": "B", "content": "Both Statement I and Statement II are false"}, {"identifier": "C", "content": "Statement I is true but Statement II is false"}, {"identifier": "D", "content": "Statement I is false but Statement II is true"}] | ["A"] | null | Mixture of chloroform and aniline can be
separated by simple distillation as these
two liquids have sufficient difference in
boiling point.
Chloroform (b.p. 334 K), aniline (b.p. 457 K)
<br><br> In steam distillation, if one of the
substances is water and the other, a water
insoluble substance (like aniline) then the
m... | mcq | jee-main-2021-online-26th-february-morning-slot | 570 |
1krrl7mah | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | When 0.15 g of an organic compound was analyzed using Carius method for estimation of bromine, 0.2397 g of AgBr was obtained. The percentage of bromine in the organic compound is ______________. (Nearest integer)<br/><br/>[Atomic mass : Silver = 108, Bromine = 80] | [] | null | 68 | Moles of Br = Moles of AgBr obtained<br><br>$$\Rightarrow$$ Mass of Br = $${{0.2397} \over {188}}$$ $$\times$$ 80 g<br><br>therefore % Br in the organic compound <br><br>$$ = {{{W_{Br}}} \over {{W_T}}}$$ $$\times$$ 100<br><br>$${{0.2397 \times 80} \over {188 \times 0.15}}$$ $$\times$$ 100 = 0.85 $$\times$$ 80 = 68<br><... | integer | jee-main-2021-online-20th-july-evening-shift | 574 |
1ktiedge7 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) :<br/><br/>Assertion (A) : A simple distillation can be used to separate a mixture of propanol and propanone.<br/><br/>Reason (R) : Two liquids with a difference of more than 20$$^\circ$$ in their boiling points ca... | [{"identifier": "A", "content": "(A) is false but (R) is true."}, {"identifier": "B", "content": "Both (A) and (R) are correct but (R) is not the correct explanation of (A)"}, {"identifier": "C", "content": "(A) is true but (R) is false"}, {"identifier": "D", "content": "Both (A) and (R) are correct and (R) is the corr... | ["D"] | null | Simple distillation can be used to separate a
mixture of propanol and propanone.
<br><br>• Two liquid with difference in B.P. around 20°C
can be separated by simple distillation.
<br><br>• B.P. of propanol is 370 K.
<br>B.P. of acetone is 329 K.
<br><br>Both assertion & reason are correct & (R) is the correct ... | mcq | jee-main-2021-online-31st-august-morning-shift | 576 |
1l56b0tm8 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?</p> | [{"identifier": "A", "content": "I<sub>2</sub> (Solid)"}, {"identifier": "B", "content": "U.V. Light"}, {"identifier": "C", "content": "Visualisation agent as a component of mobile phase"}, {"identifier": "D", "content": "Spraying of an appropriate reagent"}] | ["C"] | null | TLC is a technique used to separate mixture of compounds based on differences in polarity. In TLC a glass
plate coated with a stationary phase is spotted with the mixture to be separated. | mcq | jee-main-2022-online-28th-june-morning-shift | 577 |
1l59r6ck3 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.</p>
<p>Assertion A : A mixture contains benzoic acid and napthalene. The pure benzoic acid can be separated out by the use of benzene.</p>
<p>Reason R : Benzoic acid is soluble in hot water.</p>
<p>In the light of ... | [{"identifier": "A", "content": "Both A and R are true and R is the correct explanation of A."}, {"identifier": "B", "content": "Both A and R are true but R is NOT the correct explanation of A."}, {"identifier": "C", "content": "A is true but R is false."}, {"identifier": "D", "content": "A is false but R is true."}] | ["D"] | null | Since, both benzoic acid and naphthalene will
dissolve in benzene. Hence assertion is wrong.<br/><br/>
Benzoic acid is almost insoluble in cold water but
soluble in hot water. Hence Reason is true. | mcq | jee-main-2022-online-25th-june-evening-shift | 578 |
1l5am1psg | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Phenol on reaction with dilute nitric acid, gives two products. Which method will be most efficient for large scale separation?</p> | [{"identifier": "A", "content": "Chromatographic separation"}, {"identifier": "B", "content": "Fractional Crystallisation"}, {"identifier": "C", "content": "Steam distillation"}, {"identifier": "D", "content": "Sublimation"}] | ["C"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8mcjbp1/3d2ed7f3-8d11-474b-a0ae-7b9a916da7d8/9e3bf250-3f91-11ed-b7a1-977a3e42380c/file-1l8mcjbp2.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l8mcjbp1/3d2ed7f3-8d11-474b-a0ae-7b9a916da7d8/9e3bf250-3f91-11ed-b7a1-977a3e42380c/fi... | mcq | jee-main-2022-online-25th-june-morning-shift | 579 |
1l6f812yg | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance A and substance B from the base line are 3.25 cm, 2.08 cm and 1.05 cm, respectively. The ratio of R<sub>f</sub> values of A to B is _____________.</p> | [] | null | 2 | $$\mathrm{R}_{\mathrm{f}}=\frac{\text { Distance travelled by the substance }}{\text { Distance travelled by the solvent front }}$$
<br/><br/>
$$\left(R_{f}\right)_{A}=\frac{2.08}{3.25}$$
<br/><br/>
$$\left(R_{f}\right)_{B}=\frac{1.05}{3.25}$$
<br/><br/>
$$\frac{\left(R_{f}\right)_{A}}{\left(R_{f}\right)_{B}} \simeq 2$... | integer | jee-main-2022-online-25th-july-evening-shift | 580 |
1l6gqmtwh | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Which technique among the following, is most appropriate in separation of a mixture of $$100 \,\mathrm{mg}$$ of $$p$$-nitrophenol and picric acid ?</p> | [{"identifier": "A", "content": "Steam distillation"}, {"identifier": "B", "content": "2-5 ft long column of silica gel"}, {"identifier": "C", "content": "Sublimation"}, {"identifier": "D", "content": "Preparative TLC (Thin Layer Chromatography)"}] | ["D"] | null | Thin layer chromatography is a technique used to
isolate non-volatile mixtures.<br/><br/>
Hence, mixture of p-nitrophenol and Picric acid is
separated by TLC. | mcq | jee-main-2022-online-26th-july-morning-shift | 581 |
1l6kr4j7b | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Match List - I with List - II.</p>
<p><style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
.tg th{border-color:black;border-style:sol... | [{"identifier": "A", "content": "(A) - (IV), (B) - (III), (C) - (I), (D) - (II)"}, {"identifier": "B", "content": "(A) - (III), (B) - (I), (C) - (IV), (D) - (II)"}, {"identifier": "C", "content": "(A) - (III), (B) - (IV), (C) - (II), (D) - (I)"}, {"identifier": "D", "content": "(A) - (III), (B) - (IV), (C) - (I), (D) -... | ["D"] | null | (A) Chloroform + Aniline $\rightarrow$ (III) Distillation<br/><br/>
(B) Benzoic acid + Napthalene $\rightarrow$ (IV) Crystallisation<br/><br/>
(C) Water + Aniline $\rightarrow$ (I) Steam distillation<br/><br/>
(D) Napthalene + Sodium chloride $\rightarrow$ (II) Sublimation | mcq | jee-main-2022-online-27th-july-evening-shift | 582 |
1l6nx7lkp | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R</p>
<p>Assertion A : Thin layer chromatography is an adsorption chromatography.</p>
<p>Reason R : A thin layer of silica gel is spread over a glass plate of suitable size in thin layer chromatography which acts as an... | [{"identifier": "A", "content": "Both A and R are true and R is the correct explanation of A"}, {"identifier": "B", "content": "Both A and R are true but R is NOT the correct explanation of A"}, {"identifier": "C", "content": "A is true but R is false"}, {"identifier": "D", "content": "A is false but R is true"}] | ["A"] | null | Thin layer chromoatography (TLC) is another type
of adsorption chromatography, which involve
sepration of substance of a mixture ovel a thin
layer of an adsorbent coated on glass plate.<br/><br/>
A thin layer (about 0.2 mm thick) of an adsorbent
(silica gel) or (Alumina) in spread overa glass plate
of suitable size. H... | mcq | jee-main-2022-online-28th-july-evening-shift | 583 |
1ldpnyhxm | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Match items of column I and II</p>
<p><style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;width: 100%}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
.tg th{border-color:black;borde... | [{"identifier": "A", "content": "A-(ii), B-(iv), C-(i), D-(iii)"}, {"identifier": "B", "content": "A-(iii), B-(iv), C-(ii), D-(i)"}, {"identifier": "C", "content": "A-(i), B-(iii), C-(ii), D-(iv)"}, {"identifier": "D", "content": "A-(ii), B-(iii), C-(iv), D-(i)"}] | ["D"] | null | Water and dichloromethane can be separated by
differential extraction.
<br/><br/>C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> and NaCl can be separated by
crystallization. | mcq | jee-main-2023-online-31st-january-morning-shift | 584 |
ldqx9epg | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Match List <b>I</b> with List <b>II</b>:</p>
<style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
.tg th{border-color:black;border-st... | [{"identifier": "A", "content": "A-III, B-I, C-IV, D-II"}, {"identifier": "B", "content": "A-II, B-I, C-III, D-IV"}, {"identifier": "C", "content": "A-IV, B-I, C-III, D-II"}, {"identifier": "D", "content": "A-III, B-IV, C-I, D-II"}] | ["D"] | null | <p><style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial,... | mcq | jee-main-2023-online-30th-january-evening-shift | 585 |
1ldssjubj | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Following chromatogram was developed by adsorption of compound 'A' on a 6 cm TLC glass plate. Retardation factor of the compound 'A' is _________ $$\times 10^{-1}$$.</p>
<p><img src="data:image/png;base64,UklGRkQLAABXRUJQVlA4IDgLAABQnQCdASoAA4MBP4HA2WU2MCynIfRZasAwCWlu7mB0KcmUfr5k/zH9Ytn7PLt330e44b/83kv9KYu0WN1rG61j... | [] | null | 6 | $\mathrm{R}_{\mathrm{f}}=\frac{\text { Distance moved by thesubstance frombaseline }}{\text { Distance moved by thesolvent frombaseline }}$<br/><br/> $=\frac{3.0 \mathrm{~cm}}{5.0 \mathrm{~cm}}=0.6$ or $6 \times 10^{-1}$ | integer | jee-main-2023-online-29th-january-morning-shift | 586 |
lgnzeywd | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Which of the following statement is correct for paper chromatography? | [{"identifier": "A", "content": "Water present in the mobile phase gets absorbed by the paper which then forms the stationary phase."}, {"identifier": "B", "content": "Water present in the pores of the paper forms the stationary phase."}, {"identifier": "C", "content": " Paper sheet forms the stationary phase."}, {"ide... | ["B"] | null | The correct statement for paper chromatography is:
<br/><br/>
(B) Water present in the pores of the paper forms the stationary phase.
<br/><br/>
In paper chromatography, the stationary phase is the water that is absorbed and trapped in the pores of the paper, while the mobile phase is a liquid solvent that moves throug... | mcq | jee-main-2023-online-15th-april-morning-shift | 587 |
1lgrlkiw3 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Three organic compounds A, B and $$\mathrm{C}$$ were allowed to run in thin layer chromatography using hexane and gave the following result (see figure). The $$\mathrm{R}_{\mathrm{f}}$$ value of the most polar compound is ____________ $$\times 10^{-2}$$</p>
<p><img src="data:image/png;base64,UklGRnQOAABXRUJQVlA4IGgO... | [] | null | 25 | In thin layer chromatography using hexane, the least polar compound will rise to maximum height and most polar compound will rise to minimum height.<br/><br/>
$\therefore \mathrm{R}_{\mathrm{f}}$ value for most polar compound<br/><br/>
$$
\begin{aligned}
& =\frac{2}{8}=0.25 \\\\
& =25 \times 10^{-2}
\end{aligned}
$$ | integer | jee-main-2023-online-12th-april-morning-shift | 588 |
1lguzrwva | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Thin layer chromatography of a mixture shows the following observation:</p>
<p><img src="data:image/png;base64,UklGRjgJAABXRUJQVlA4ICwJAACQ1ACdASr6AgADP4HA32W2MS+nIPNJCsAwCWlu8p97ewjZTBu9b5oXPv1Pq3KTPeEJESIkRIiREiJESIkRIiREiJESIgleAQEoablB0IjuVYxJ6Fx6Ggbqc5DQN1OchoG6nOQ0DdTnIaBupzkNA3U5yGgbqce7Lie9V6WYwxhjmRrhSnyj4Y... | [{"identifier": "A", "content": "B, A, C"}, {"identifier": "B", "content": "C, A, B"}, {"identifier": "C", "content": "A, C, B"}, {"identifier": "D", "content": "B, C, A"}] | ["C"] | null | According to the observation, A is more mobile and interacts with the mobile phase more than $\mathrm{C}$, and $\mathrm{C}$ is more drawn to the mobile phase than $\mathrm{B}$.
<br/><br/>Hence, the correct order of elution in the silico gel column chromatography is : $\mathrm{B}<\mathrm{C}<\mathrm{A}$ | mcq | jee-main-2023-online-11th-april-morning-shift | 589 |
1lgygjxi9 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Using column chromatography, mixture of two compounds 'A' and 'B' was separated. 'A' eluted first, this indicates 'B' has</p> | [{"identifier": "A", "content": "high R<sub>f</sub>, weaker adsorption"}, {"identifier": "B", "content": "high R<sub>f</sub>, stronger adsorption"}, {"identifier": "C", "content": "low R<sub>f</sub>, weaker adsorption"}, {"identifier": "D", "content": "low R<sub>f</sub>, stronger adsorption"}] | ["D"] | null | <p>In column chromatography, the compound that elutes first is the one that is less strongly adsorbed to the stationary phase. Hence, 'A' has weaker adsorption than 'B'. Therefore, 'B' has stronger adsorption.</p>
<p>The retention factor (R<sub>f</sub>) is a measure of how much a compound moves ... | mcq | jee-main-2023-online-10th-april-morning-shift | 590 |
1lh32g43h | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>From the figure of column chromatography given below, identify incorrect statements.</p>
<p><img src="data:image/png;base64,UklGRvIHAABXRUJQVlA4IOYHAADQiQCdASp2AQADP4HA2GW2MCynINJ5wsAwCWlu/CHYLmVHZ1+ftB/rMcnLCdw80AIF2/+2eloUXyXIvkuRfJci9hDFam7GMTLVarVarVZyyfnYM3s5/gC68acRVxROHSmOnMMxmMxmLwoQQnDBfzePI/8aH6Q31OUhAgifa... | [{"identifier": "A", "content": "B and D only"}, {"identifier": "B", "content": "B, C and D only"}, {"identifier": "C", "content": "A, B and D only"}, {"identifier": "D", "content": "A, B and C only"}] | ["D"] | null | As the chromatogram, degree of polarity
$$
\rightarrow \mathrm{a}>\mathrm{b}>\mathrm{c} \text {. }
$$<br/><br/>
$\therefore$ Statements A, B are incorrect as b comes out before ' $C$ ' the statement $C$ is also incorrect.<br/><br/>
As a is most polar, it spends most time. Hence, A, B & C are incorrect statements. | mcq | jee-main-2023-online-6th-april-evening-shift | 591 |
lsaoomjj | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | Lassaigne's test is used for detection of : | [{"identifier": "A", "content": "Phosphorous and halogens only"}, {"identifier": "B", "content": "Nitrogen, Sulphur and Phosphorous only"}, {"identifier": "C", "content": "Nitrogen, Sulphur, phosphorous and halogens"}, {"identifier": "D", "content": "Nitrogen and Sulphur only"}] | ["C"] | null | <p>Lassaigne's test is a qualitative test in analytical chemistry used to detect the presence of certain elements, namely nitrogen, sulfur, and halogens in an organic compound. The test involves heating the organic compound with sodium metal to convert these elements to sodium salts, which can then react with speci... | mcq | jee-main-2024-online-1st-february-evening-shift | 592 |
luz2ustl | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Methods used for purification of organic compounds are based on :</p> | [{"identifier": "A", "content": "neither on nature of compound nor on the impurity present.\n"}, {"identifier": "B", "content": "presence of impurity only.\n"}, {"identifier": "C", "content": "nature of compound and presence of impurity.\n"}, {"identifier": "D", "content": "nature of compound only."}] | ["C"] | null | <p>The methods used for the purification of organic compounds are fundamentally based on both the nature of the compound and the presence of the impurity. This is because the selection of a suitable purification technique requires understanding not only what the organic compound is (i.e., its physical and chemical prop... | mcq | jee-main-2024-online-9th-april-morning-shift | 594 |
lv9s2t04 | chemistry | basics-of-organic-chemistry | purification-of-organic-compounds | <p>Using the given figure, the ratio of $$\mathrm{R}_f$$ values of sample $$\mathrm{A}$$ and sample $$\mathrm{C}$$ is $$x \times 10^{-2}$$. Value of $$x$$ is __________.</p>
<p><img src="data:image/png;base64,UklGRsIgAABXRUJQVlA4ILYgAABwfQGdASrvAgADP4G612U2LiwnIlDZ4sAwCWlu/A04vzYHZ19frb/yv8D/g/CDIdy//3598f9r+x///81+Ap8... | [] | null | 50 | <p>To determine the ratio of the $$\mathrm{R}_f$$ values of sample $$\mathrm{A}$$ and sample $$\mathrm{C}$$, follow these steps:</p>
<ol>
<li><strong>Understanding the $$\mathrm{R}_f$$ Value</strong>:</li>
</ol>
<p>The $$\mathrm{R}_f$$ value (Retention factor) is calculated using the formula:</p>
<p>$$\mathrm{R}_{\ma... | integer | jee-main-2024-online-5th-april-evening-shift | 595 |
xrkqpl1CM0uRLmnP | chemistry | basics-of-organic-chemistry | stability-of-intermediate | Due to the presence of an unpaired electron, free radicals are: | [{"identifier": "A", "content": "Chemically reactive "}, {"identifier": "B", "content": "Chemically inactive "}, {"identifier": "C", "content": "Anions "}, {"identifier": "D", "content": "Cations"}] | ["A"] | null | Free radicals are electrically neutral, unstable and very reactive on account of the presence of odd electrons. | mcq | aieee-2005 | 596 |
LjyyB60NMFGhtJWy | chemistry | basics-of-organic-chemistry | stability-of-intermediate | The increasing order of stability of the following free radicals is | [{"identifier": "A", "content": "$${({C_6}{H_5})_2}\\mathop C\\limits^ \\bullet H$$ < $${({C_6}{H_5})_3}\\mathop C\\limits^ \\bullet$$ < $${(C{H_3})_3}\\mathop C\\limits^ \\bullet $$ < $${(C{H_3})_2}\\mathop C\\limits^ \\bullet H$$"}, {"identifier": "B", "content": "$${(C{H_3})_2}\\mathop C\\limits^ \\bulle... | ["B"] | null | The order of stability of free radicals
<br><br>$${\left( {{C_6}{H_5}} \right)_3}\,\mathop C\limits^ \bullet > {\left( {{C_6}{H_5}} \right)_2}\mathop C\limits^ \bullet H > {\left( {C{H_3}} \right)_3}\mathop C\limits^ \bullet > {\left( {C{H_3}} \right)_2}\mathop C\limits^ \bullet H$$
<br><br>The stabili... | mcq | aieee-2006 | 597 |
Q6HLb4XtzlsHg3Mj | chemistry | basics-of-organic-chemistry | stability-of-intermediate | The electrophile, $${E^ \oplus }$$ attacks the benzene ring to generate the intermediate $$\sigma - $$complex. Of the following, which $$\sigma - $$complex is lowest energy? | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266351/exam_images/j3t1vhdmkodcesje8nzj.webp\" loading=\"lazy\" alt=\"AIEEE 2008 Chemistry - Basics of Organic Chemistry Question 195 English Option 1\"> "}, {"identifier": "B", "content": "<img c... | ["B"] | null | In option $$(b)$$ the complex formed is with benzene where as in other cases it is formed with nitrobenzene with $$ - N{O_2}$$ group in different position $$\left( {O - ,m - ,p - } \right).$$ The complex formed with nitrobenzene in any position of $$ - N{O_2}$$ group is less stable than the complex formed with benzene ... | mcq | aieee-2008 | 598 |
eYGmt6Fl9kJkT01k | chemistry | basics-of-organic-chemistry | stability-of-intermediate | Arrange the carbanions, $${(C{H_3})_3}\overline C $$, $$\overline C C{l_3}$$ , $${(C{H_3})_2}\overline C H$$, $${C_6}{H_5}\overline C H{}_2$$ in order of their decreasing stability : | [{"identifier": "A", "content": "$${(C{H_3})_2}\\overline C H$$ > $$\\overline C C{l_3}$$ > $${C_6}{H_5}\\overline C H{}_2$$ > $${(C{H_3})_3}\\overline C $$"}, {"identifier": "B", "content": "$$\\overline C C{l_3}$$ > $${C_6}{H_5}\\overline C H{}_2$$ > $${(C{H_3})_2}\\overline C H$$ > $${(C{H_3})_3}\\... | ["B"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264945/exam_images/bh6xfhtevxwolqgrua82.webp" loading="lazy" alt="AIEEE 2009 Chemistry - Basics of Organic Chemistry Question 218 English Explanation"> | mcq | aieee-2009 | 599 |
PQFXROgIWKLaGWao | chemistry | basics-of-organic-chemistry | stability-of-intermediate | The order of stability of the following carbocations :
<br/><br/><img src="data:image/png;base64,UklGRoQMAABXRUJQVlA4IHgMAACwgQCdASoAAywBP4G812Y2LiwnIVJJMsAwCWlu5VARKM+ZjcL4+bv8z2+f7/a/cB7Pz+g7+9sneFwAd5dN0+92Ns8h4XyVaU75QUGCHfVzid8oKDBDvosgmgmkG7AmIWWlO+R2oILrBo2sGjawaNrBo2sGjawaNke2d5uT7fKVF4jYyao3uPnmusGjawaNrBo2sG... | [{"identifier": "A", "content": "$${\\rm I}{\\rm I}{\\rm I} > {\\rm I}{\\rm I} > {\\rm I}$$ "}, {"identifier": "B", "content": "$${\\rm I}{\\rm I} > {\\rm I}{\\rm I}{\\rm I} > {\\rm I}$$ "}, {"identifier": "C", "content": "$${\\rm I} > {\\rm I}{\\rm I} > {\\rm I}{\\rm I}{\\rm I}$$ "}, {"identifier": "... | ["D"] | null | Higher stability of allyl and aryl substituted methyl carbocation is due to dispersal of positive charge by resonance.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266036/exam_images/uzcuqpxnmwtby2wdswsz.webp" loading="lazy" alt="JEE Main 2013 (Offline) Chemistry - Bas... | mcq | jee-main-2013-offline | 600 |
1krq5uw39 | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266568/exam_images/hwunkc6inc5fog0anpbx.webp"/><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264550/exam_images/ane8p2ljc0l1bjb0wisx.webp"/><source media="(max-w... | [{"identifier": "A", "content": "(C) and (D) only"}, {"identifier": "B", "content": "(A), (B) and (D) only"}, {"identifier": "C", "content": "(A) and (B) only"}, {"identifier": "D", "content": "(A), (B) and (C) only"}] | ["C"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l2ppljtc/05b6a760-1bb2-4ab6-8ad1-5b3cdba93626/c07a7900-caa1-11ec-9875-97c40a5b0f9a/file-1l2ppljtd.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l2ppljtc/05b6a760-1bb2-4ab6-8ad1-5b3cdba93626/c07a7900-caa1-11ec-9875-97c40a5b0f9a/fi... | mcq | jee-main-2021-online-20th-july-morning-shift | 601 |
1l5bddpj1 | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <p>Arrange the following carbocations in decreasing order of stability.</p>
<p><img src="data:image/png;base64,UklGRgYIAABXRUJQVlA4IPoHAAAwcwCdASoAA/8AP4HA22S2MS2nI9P48sAwCWlu62AzP5kdGSnMDBAUc7Z0jBk+UF7dv5uDK8y8/8Lk1rDc+oIfUEPqCH1BD6gh9QQ61XacVYZbvG+kAjoOe6VI7hicTmtWxO79wxOJzWrYnd+4YnE5xruD/VQo34L6KoSFI3UyjBbHbNid37hic... | [{"identifier": "A", "content": "B > A > C"}, {"identifier": "B", "content": "A > B > C"}, {"identifier": "C", "content": "C > B > A"}, {"identifier": "D", "content": "C > A > B"}] | ["A"] | null | The given carbocations are<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8medbsd/343005fd-b7c6-4b2c-97ce-9fcdf6d7c292/c9b589d0-3f98-11ed-be5e-93aeba6c60fe/file-1l8medbse.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l8medbsd/343005fd-b7c6-4b2c-97ce-9fcdf6d7c292/c9b5... | mcq | jee-main-2022-online-24th-june-evening-shift | 604 |
1lgvtwly7 | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <p>The decreasing order of hydride affinity for following carbocations is:</p>
<p><img src="data:image/png;base64,UklGRuAPAABXRUJQVlA4INQPAACQ0ACdASrhAQADP4G+2mW2L60nIdCpMsAwCWlu+EmIdx29bt9AWntnF24y7bdXnTGR//96a/vYOoh4xAPQzaGbPcudqfT0zbJf+OaEkvHtGS4j2jJQ/waq33rnCoj3nJfGCXchP/YDPR2WH2OiE4xIRHY47Me7zZeJgalH0svLRMlJDCH/pU... | [{"identifier": "A", "content": "A, C, D, B"}, {"identifier": "B", "content": " C, A, B, D"}, {"identifier": "C", "content": "A, C, B, D"}, {"identifier": "D", "content": "C, A, D, B"}] | ["B"] | null | Least stable carbocation will have highest hydride affinity.<br/><br/>
Stability of carbocation:<br/><br/>
$$
D>B>A>C
$$<br/><br/>
Hydride affinity order:<br/><br/>
$$
C>A>B>D
$$ | mcq | jee-main-2023-online-10th-april-evening-shift | 605 |
jaoe38c1lscqd7xx | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <p>The order of relative stability of the contributing structure is :</p>
<p><img src="data:image/png;base64,UklGRv4MAABXRUJQVlA4IPIMAACwrQCdASoAA6UBP4G01ma2LCwnoVBZIsAwCWlu/EQUDR4zs6/P12xe7Bmzc7W5akNZiX/y//93+oZr3kOmCPIkppO8h0wR5ElNJ3kJgXueB6++YREndSHTBHkSU0k0W8xfJlzlrzRqr5oT5wthV8YvoTrFaAwQEeRJTSd5Dpgi32EBVZXOLeS+E0H... | [{"identifier": "A", "content": "I = II = III"}, {"identifier": "B", "content": "I > II > III"}, {"identifier": "C", "content": "III > II > I"}, {"identifier": "D", "content": "II > I > III"}] | ["B"] | null | I $>$ II $>$ III, since neutral resonating structures are more stable than charged resonating structure. II $>$ III, since stability of structure with -ve charge on more electronegative atom is higher. | mcq | jee-main-2024-online-27th-january-evening-shift | 606 |
1lsg7aykh | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <p>The correct stability order of carbocations is
</p> | [{"identifier": "A", "content": "$$\\left(\\mathrm{CH}_3\\right)_3 \\mathrm{C}^{+}>\\mathrm{CH}_3-\\stackrel{+}{\\mathrm{C}} \\mathrm{H}_2>\\left(\\mathrm{CH}_3\\right)_2 \\stackrel{+}{\\mathrm{C}} \\mathrm{H}>\\stackrel{+}{\\mathrm{C}} \\mathrm{H}_3$$"}, {"identifier": "B", "content": "$$\\left(\\mathrm{CH}_3\\right)_... | ["B"] | null | <p>More no. of hyperconjugable Hydrogens, more stable is the carbocations.</p> | mcq | jee-main-2024-online-30th-january-evening-shift | 608 |
luz2v4dp | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <p>Relative stability of the contributing structures is :</p>
<p><img src="data:image/png;base64,UklGRkoSAABXRUJQVlA4ID4SAAAwXgCdASoAA3MAPm02l0kkIyIhIJK6oIANiWlu4XKRG/Nv8i/2/tW/vf9u8j/H97T/YeMBE4+S/cj89/dvbP/Cd7/x//uvUL9c/6zxU9lftHmC+xPzH/a/4H8nPTB/xf716p/Xr2AP1U/Fv0yvEe+6/8D2Bv6Z/iPVq/tv2z8/v1V7BH62/9XsCekUNymZmZVi91s... | [{"identifier": "A", "content": "(II) > (I) > (III)"}, {"identifier": "B", "content": "(III) > (II) > (I)"}, {"identifier": "C", "content": "(I) > (III) > (II)"}, {"identifier": "D", "content": "(I) > (II) > (III)"}] | ["D"] | null | <p>Firstly higher the number of bonds or say complete octet higher will be stability, then the negative charge situated over more electronegative element more will be stability. Hence, overall order of stability is I > II > III.</p> | mcq | jee-main-2024-online-9th-april-morning-shift | 610 |
lv2es40d | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <p>Correct order of stability of carbanion is :</p>
<p><img src="data:image/png;base64,UklGRnAIAABXRUJQVlA4IGQIAAAQdgCdASoAA/MAP4HA22O2Ma2mo1NJosAwCWlu4Wz1OmNwu56m3P7Fw4h3K/zfHSxJ/HVP/1OHiGXMb6L3UMuY30XuoZcxvovdQys0E19ApLy0UeaOhqSQg/Y3m/dghe7BC92CF7sEL3YIXuwJIeyckM/vQsVRs4MTJMINXNmdjM8esN58Cd/wOHgumZvlI7/IR3IIXTn9qVu3x... | [{"identifier": "A", "content": "d > c > b > a"}, {"identifier": "B", "content": "c > b > d > a"}, {"identifier": "C", "content": "d > a > c > b"}, {"identifier": "D", "content": "a > b > c > d"}] | ["A"] | null | <p>(d) is aromatic. So it is most stable.</p>
<p>(a) is anti-aromatic. So it is least stable.</p> | mcq | jee-main-2024-online-4th-april-evening-shift | 611 |
lvb2acik | chemistry | basics-of-organic-chemistry | stability-of-intermediate | <p>Number of carbocations from the following that are not stabilized by hyperconjugation is _______.</p>
<p><img src="data:image/png;base64,UklGRtYMAABXRUJQVlA4IMoMAADwqwCdASoAA7cBP4HA3GU2MS2nIpJI4sAwCWlu4W2l7mNwvV52/Wq3H0+M8vaL59NJq356CsmV7Kf//f/B08hROilafM+VxNPlcTT5XE0+VxNPlcTT5XEv5x4IjEFxgzfnHiPgtyCN+YUFC7R8FxgzfnHi... | [] | null | 5 | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lwbnxhco/41d3b7c4-1974-40e9-9ac7-c37e8c5b55fe/be4d7980-14d6-11ef-b3c9-5ba1278f485b/file-1lwbnxhcp.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lwbnxhco/41d3b7c4-1974-40e9-9ac7-c37e8c5b55fe/be4d7980-14d6-11ef-b3c9-5ba1278f485b... | integer | jee-main-2024-online-6th-april-evening-shift | 612 |
BuZAVzF2vqhRzkUr | chemistry | biomolecules | carbohydrates | Complete hydrolysis of cellulose gives | [{"identifier": "A", "content": "D-ribose"}, {"identifier": "B", "content": "D-glucose"}, {"identifier": "C", "content": "L-glucose"}, {"identifier": "D", "content": "D-fructose"}] | ["B"] | null | Cellulose is a linear polymer of $$\beta $$ $$ - D - $$ glucose in which $${C_1}$$ of one glucose unit is connected to $${C_4}$$ of the other through $$\beta - D$$ glucosidic linkage. It does not undergo hydrolysis easily. However on heating with dilute $${H_2}S{O_4}$$ under pressure. It does undergo hydrolysis to giv... | mcq | aieee-2003 | 613 |
ieUYfKfGPDdWCryW | chemistry | biomolecules | carbohydrates | The term anomers of glucose refers to | [{"identifier": "A", "content": "isomers of glucose that differ in configurations at carbons one and four (C-1 and C-4) "}, {"identifier": "B", "content": "a mixture of (D)-glucose and (L)-glucose"}, {"identifier": "C", "content": "enantiomers of glucose"}, {"identifier": "D", "content": "isomers of glucose that differ... | ["D"] | null | Cyclization of the open chain structure of $$D$$-$$(+)$$- glucose has created a new stereocenter at $${C_1}$$ which explains the existance of two cyclic forms of $$D$$-$$(+)$$- glucose, namely $$\alpha - $$ and $$\beta - $$. These two cyclic forms are <i>diasteromers, such diasteromers which differ only in the confi... | mcq | aieee-2006 | 614 |
dFYewtGhC4QqZPCA | chemistry | biomolecules | carbohydrates | $$\alpha$$-D-(+)-glucose and $$\beta$$-D-(+)-glucose are | [{"identifier": "A", "content": "conformers "}, {"identifier": "B", "content": "epimers"}, {"identifier": "C", "content": "anomers"}, {"identifier": "D", "content": "enantiomers "}] | ["C"] | null | Since $$\alpha - D - \left( + \right) - \,\,$$ glucose and $$\beta - D - \left( + \right)\,\,$$ glucose differ in configuration at $$C-1$$ atom so they are anomers.
<br><br><b>NOTE :</b> Anomers are those diastereomers that differ in configuration at $$C-1$$ atom. i.e., $$(c)$$ in the correct answer. | mcq | aieee-2008 | 615 |
tZaaI1PWKGd1MHzl | chemistry | biomolecules | carbohydrates | The two functional groups present in a typical carbohydrate are | [{"identifier": "A", "content": "-OH and -COOH "}, {"identifier": "B", "content": "-CHO and -COOH "}, {"identifier": "C", "content": "> C = O and - OH "}, {"identifier": "D", "content": "- OH and -CHO"}] | ["D"] | null | <b>NOTE :</b> Glucose is considered as a typical carbohydrate which contains $$-CHO$$ and $$-OH$$ group. | mcq | aieee-2009 | 616 |
kKFos6LA4lSK8VZN | chemistry | biomolecules | carbohydrates | Which of the following compounds can be detected by Molisch’s test ? | [{"identifier": "A", "content": "Nitro compounds"}, {"identifier": "B", "content": "Sugars"}, {"identifier": "C", "content": "Amines "}, {"identifier": "D", "content": "Primary alcohols"}] | ["B"] | null | <b>Molisch's Test :</b> This is a general test for carbohydrates. One or two drops of alcoholic solution of $$\alpha $$-naphthol is added to $$2$$ ml glucose solution. $$1$$ ml of conc. $${H_2}S{O_4}$$ solution is added carefully along the sides of the test-tube. The formation of a violet ring at the junction of two li... | mcq | aieee-2012 | 617 |
x2MuRa24eFVBfJ0L | chemistry | biomolecules | carbohydrates | Which of the following compounds will behave as a reducing sugar in an aqueous KOH solution?
| [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l7ynp8jd/63f00050-2faf-4a5b-b1b4-741eadb05905/777c1690-328a-11ed-8893-19b23ee4c66d/file-1l7ynp8je.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l7ynp8jd/63f00050-2faf-4a5b-b1b4-741eadb05905/777... | ["D"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266523/exam_images/abfepq7tnhru0jmukfk6.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265407/exam_images/stthknedgiyhhhlfiqxu.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | jee-main-2017-offline | 618 |
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