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jaoe38c1lsfk6hxy | chemistry | aldehydes-ketones-and-carboxylic-acids | tests-for-aldehyde-and-ketones | <p>From the compounds given below, number of compounds which give positive Fehling's test is _________.</p>
<p>Benzaldehyde, Acetaldehyde, Acetone, Acetophenone, Methanal, 4nitrobenzaldehyde, cyclohexane carbaldehyde.</p> | [] | null | 3 | <p>Acetaldehyde $$(\mathrm{CH}_3 \mathrm{CHO})$$, Methanal $$(\mathrm{HCHO})$$, and cyclohexane carbaldehyde <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lt2rgizn/4c9d716e-c07d-4579-92ec-f77ff0f0f5d3/d7590730-d48c-11ee-9383-19a774a872fb/file-1lt2rgizo.png?format=png" data-orsrc="https://app-content.... | integer | jee-main-2024-online-29th-january-morning-shift | 374 |
luxwdeto | chemistry | aldehydes-ketones-and-carboxylic-acids | tests-for-aldehyde-and-ketones | <p>Which of the following compounds will give silver mirror with ammoniacal silver nitrate?</p>
<p>A. Formic acid</p>
<p>B. Formaldehyde</p>
<p>C. Benzaldehyde</p>
<p>D. Acetone</p>
<p>Choose the correct answer from the options given below :</p> | [{"identifier": "A", "content": "B and C only"}, {"identifier": "B", "content": "C and D only"}, {"identifier": "C", "content": "A, B and C only"}, {"identifier": "D", "content": "A only"}] | ["C"] | null | <p>The reaction involved here is the Tollen's test, which detects aldehydes and alpha-hydroxy ketones, as they are able to reduce the ammoniacal silver nitrate solution to metallic silver, producing a mirror-like coating on the glassware. This test specifically distinguishes these reducing sugars from non-reducing suga... | mcq | jee-main-2024-online-9th-april-evening-shift | 375 |
mo99S4jYeBTUH1NS | chemistry | basics-of-organic-chemistry | acid-and-base-strength | Consider the acidity of the carboxylic acids:<br/>
(a) PhCOOH <br/>
(b) o – NO<sub>2</sub>C<sub>6</sub>H<sub>4</sub>COOH <br/>
(c) p – NO<sub>2</sub>C<sub>6</sub>H<sub>4</sub>COOH<br/>
(d) m – NO<sub>2</sub>C<sub>6</sub>H<sub>4</sub>COOH <br/>
Which of the following order is correct? | [{"identifier": "A", "content": "(b) > (d) > (a) > (c)"}, {"identifier": "B", "content": "(b) > (d) > (c) > (a)"}, {"identifier": "C", "content": "(a) > (b) > (c) > (d)"}, {"identifier": "D", "content": "(b) > (c) > (d) > (a)"}] | ["D"] | null | In aromatic acids presence of electron withdrawing substituent e.g. $$ - N{O_2}$$ disperses the negative charge of the anion and stablises it and hence increases the acidity of the parent benzoic acid.
<br><br>Further $$O$$- isomer will have higher acidity than corresponding $$m$$ and $$p$$ isomers. Since nitro group... | mcq | aieee-2004 | 376 |
USs5P8RcZnPWPIhr | chemistry | basics-of-organic-chemistry | acid-and-base-strength | Which of the following is the strongest base ? | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266457/exam_images/ndgkv89lo2plnbvjghnr.webp\" loading=\"lazy\" alt=\"AIEEE 2004 Chemistry - Basics of Organic Chemistry Question 205 English Option 1\"> "}, {"identifier": "B", "content": "<img c... | ["D"] | null | Lone pair of electrons present on the nitrogen of benzyl amine is not involved in resonance. | mcq | aieee-2004 | 377 |
tVSEzu2ZqIH44HXT | chemistry | basics-of-organic-chemistry | acid-and-base-strength | The decreasing order of nucleophilicity among the nucleophiles
<br/><br/><img src="data:image/png;base64,UklGRvQMAABXRUJQVlA4IOgMAAAQhwCdASoAA0UBP4G+12Y2LywnIVIpGsAwCWlu4XNBG/Pt8t/6DuNyCbQLszxFr65wRf14Y6X2eV8O37cGP4bdOvdiHcnXuxDuTr3Yh3J17sQ7k692Idyde7EO5OvdiHcnXuxDuTr3Yh3JyD25mNELSOMvQtb+Q5JReKcUmU8klXQqfj9+vft9lH6SAm... | [{"identifier": "A", "content": "$$\\left( C \\right),\\left( B \\right),\\left( A \\right),\\left( D \\right)$$ "}, {"identifier": "B", "content": "$$\\left( B \\right),\\left( C \\right),\\left( A \\right),\\left( D \\right)$$ "}, {"identifier": "C", "content": "$$\\left( D \\right),\\left( C \\right),\\left( B \\rig... | ["A"] | null | Strong bases are generally good nucleophile. If the nucleophilic atom or the centre is the same, nucleophilicity parallels basicity, i.e., more basic the species, stronger is the nucleophile. Hence basicity as well as nucleophilicity order is
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.co... | mcq | aieee-2005 | 378 |
2s7osUAKBUiwnugA | chemistry | basics-of-organic-chemistry | acid-and-base-strength | CH<sub>3</sub>Br + Nu<sup>-</sup> $$\to$$ CH<sub>3</sub> - Nu + Br<sup>-</sup> The decreasing order of the rate of the above reaction with nucleophiles (Nu<sup>–</sup>) A to D is<br/>
[Nu<sup>–</sup> = (A) PhO<sup>–</sup>, (B) AcO<sup>–</sup>, (C) HO–, (D) CH<sub>3</sub>O<sup>–</sup>] | [{"identifier": "A", "content": "A > B > C > D"}, {"identifier": "B", "content": "B > D > C > A"}, {"identifier": "C", "content": "D > C > A > B"}, {"identifier": "D", "content": "D > C > B > A"}] | ["C"] | null | <b>TIPS/Formulae :</b>
<br><br>The stronger the acid, the weaker the conjugate base formed.
<br><br>The acid character follows the order :
<br><br>$$C{H_3}COOH > {C_6}{H_5}OH > {H_2}O > C{H_3}OH$$
<br><br>The basic character will follow the order
<br><br>$$C{H_3}CO{O^ - } < {C_6}{H_5}{O^ - } < {O^ - ... | mcq | aieee-2006 | 379 |
DfwqReCSQ8mEHOKlwITam | chemistry | basics-of-organic-chemistry | acid-and-base-strength | A mixture containing the following four compounds is extracted with $$1M$$ $$HCl.$$ The compound that goes to aqueous layer is :
<br/><br/><img src="data:image/png;base64,UklGRlwPAABXRUJQVlA4IFAPAACw5wCdASoAA20CP4HA3WS2Mi4nIxL40sAwCWlu4W5TYg9xNF2/2Z/U32j+ZXrd6D63XEH9P2wU9Pan8Vfv3S2QCff/0eZZ/ThkTP//4DH/89BAQVqIcPqwope4f... | [{"identifier": "A", "content": "(I) "}, {"identifier": "B", "content": "(II)"}, {"identifier": "C", "content": "(III)"}, {"identifier": "D", "content": "(IV)"}] | ["B"] | null | <p>A water insoluble organic base (amine) can be protonated by reaction with an acidic solution (HCl) and it can thus move from the organic layer into the aqueous layer.</p>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3zxsira/ba4185a7-0572-47cd-9ba4-00a98497d61e/d93b6960-e40d-11ec-9cee-2ba40f085bf... | mcq | jee-main-2017-online-8th-april-morning-slot | 381 |
1YtMkBtgrsBLvP9IjTJCZ | chemistry | basics-of-organic-chemistry | acid-and-base-strength | Which amongst the following is the strongest acid ? | [{"identifier": "A", "content": "CHBr<sub>3</sub>"}, {"identifier": "B", "content": "CHI<sub>3</sub> "}, {"identifier": "C", "content": "CH(CN)<sub>3</sub>"}, {"identifier": "D", "content": "CHCl<sub>3</sub>"}] | ["C"] | null | Among those $$-$$CN has highest $$-$$M and $$-$$I effect. So after losing proton (H<sup>+</sup>) anion become more stable.
<br><br>So, CH(CN)<sub>3</sub> has the highest tendency to donate proton that is why it is most acidic. | mcq | jee-main-2019-online-9th-january-morning-slot | 382 |
d6PiefOCsOJE4fsqxTPzP | chemistry | basics-of-organic-chemistry | acid-and-base-strength | The increasing basicity order of the following compounds is : <br/>
<img src="data:image/png;base64,UklGRiIOAABXRUJQVlA4IBYOAADQpgCdASoAAywBP4HA2mQ2MS0mo9MJUsAwCWlu/GwYaL0HZ19frxaS6gWfDt1xIMAHwtVG//nqTO3f9JCkJLQtlVYoWyqsULZVWKCR1RUXHAso5Y1luDeB14y1KDyz4b5ocv5FQMSunzPJjUl55IXLbSyEqn66jMIt9fJy5lGYRb6+TlzKMwi318m6RhcFxMC3... | [{"identifier": "A", "content": "A < B < D < C"}, {"identifier": "B", "content": "D < C < A < B"}, {"identifier": "C", "content": "D < C < B < A"}, {"identifier": "D", "content": "A < B < C < D"}] | ["B"] | null | (A) In the first compound, because of +I effect of CH<sub>3</sub>CH<sub>2</sub>- group electron density increses on N atom.
<br><br>(B) In the second compound, because of +I effect of two CH<sub>3</sub>CH<sub>2</sub>- group electron density is more on N atom than first compound so it is more basic than compound A.
<br>... | mcq | jee-main-2019-online-9th-january-evening-slot | 384 |
8fiCCKECwzPVdw8D820jz | chemistry | basics-of-organic-chemistry | acid-and-base-strength | In the following compounds, the decreasing order of basic strength will be : | [{"identifier": "A", "content": "(C<sub>2</sub>H<sub>5</sub>)<sub>2</sub>NH > NH<sub>3</sub> > C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub>"}, {"identifier": "B", "content": "NH<sub>3</sub> > C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub> > (C<sub>2</sub>H<sub>5</sub>)<sub>2</sub>NH"}, {"identifier": "C", "content": ... | ["C"] | null | Because of +I effect of -C<sub>2</sub>H<sub>5</sub> group, C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub> and (C<sub>2</sub>H<sub>5</sub>)<sub>2</sub>NH are more basic than NH<sub>3</sub>.
<br><br>When with amine ethyl group (-C<sub>2</sub>H<sub>5</sub>) present then basic strength order :
<br><br> 2<sup>o</sup> amine > 3... | mcq | jee-main-2019-online-8th-april-morning-slot | 385 |
RD5MP4FbaOfiAqWiBdvRs | chemistry | basics-of-organic-chemistry | acid-and-base-strength | Which of the following compounds will show
the maximum 'enol' content? | [{"identifier": "A", "content": "CH<sub>3</sub>COCH<sub>3</sub>"}, {"identifier": "B", "content": "CH<sub>3</sub>COCH<sub>2</sub>COCH<sub>3</sub>"}, {"identifier": "C", "content": "CH<sub>3</sub>COCH<sub>2</sub>COOC<sub>2</sub>H<sub>5</sub>"}, {"identifier": "D", "content": "CH<sub>3</sub>COCH<sub>2</sub>CONH<sub>2</su... | ["B"] | null | Hydrogen removed from the $$\alpha $$ carbon should be acidic in nature because ehen hydrogen is more acidic then enol formation is easy.
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263423/exam_images/ebohmd8e0f5qsbdmhahn.webp"><source media="(max-width: 50... | mcq | jee-main-2019-online-8th-april-evening-slot | 386 |
J5fxxIJbdu4CbAb66H3rsa0w2w9jx56146g | chemistry | basics-of-organic-chemistry | acid-and-base-strength | The increasing order of the pK<sub>b</sub> of the following compound is :
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265443/exam_images/lsatqg1kydhtq7y8n2rf.webp"/><img src="data:image/png;base64,UklGRuAdAABXRUJQVlA4INQdAABwBQGdASrWAQADP4G61WS2LqunIzOp6sAw... | [{"identifier": "A", "content": "(C) < (A) < (D) < (B)"}, {"identifier": "B", "content": "(B) < (D) < (C) < (A)"}, {"identifier": "C", "content": "(B) < (D) < (A) < (C)"}, {"identifier": "D", "content": "(A) < (C) < (D) < (B)"}] | ["C"] | null | Electron Withdrawing Group attached to benzene ring will reduce the
basic strength and increase pK<sub>b</sub> while Electron Donating Group
decreases pK<sub>b</sub>.
<br><br>Correct order of pK<sub>b</sub>
<br><br>(B) < (D) < (A) < (C) | mcq | jee-main-2019-online-12th-april-morning-slot | 388 |
3scsRZzXKoeqea24xv7k9k2k5dywvde | chemistry | basics-of-organic-chemistry | acid-and-base-strength | The increasing order to P<sub>kb</sub> for the following compounds will be :
<img src="data:image/png;base64,UklGRrwLAABXRUJQVlA4ILALAADQTACdASoDATkBPm02mEikIyKhIxMJmIANiWlu/HyZUcVjOzrr/Qr+Xdpv97/pfTOeZ/bvdNL9/8h/Jv6r/w/Tz/Dfy/+q+QPt3+S/YO9Tf6P+R/1f9WfTZ/jP0A8DOZX1CO3f+W/j/9l/W7zvP4L+R/2D/ne6ncqf7X+efuH8a/4j/h/wDzZPGfY... | [{"identifier": "A", "content": "(A) < (B) < (C) "}, {"identifier": "B", "content": "(C) < (A) < (B)\n"}, {"identifier": "C", "content": "(B) < (A) < (C)"}, {"identifier": "D", "content": "(B) < (C) < (A)"}] | ["C"] | null | pK<sub>b</sub> = –logK<sub>b</sub>
<br><br>So, as K<sub>b</sub> increases, pK<sub>b</sub> decreases.
<br><br>K<sub>b</sub> : (B) $$>$$ (A) $$>$$ (C)
<br><br>pK<sub>b</sub> : (B) $$<$$ (A) $$<$$ (C)
<br><br>Base strength order
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263883/exam_image... | mcq | jee-main-2020-online-7th-january-morning-slot | 389 |
l56UrG6sTX4eCFKKji7k9k2k5icr6zr | chemistry | basics-of-organic-chemistry | acid-and-base-strength | The increasing order of basicity for the
following intermediates is (from weak to
strong)<br/><img src="data:image/png;base64,UklGRpIEAABXRUJQVlA4IIYEAABQIgCdASq8AJ4APm02l0gkIyIhKNPoMIANiWlu4XNBG/Ol8H/0vtv/uHLcdwG9Z3q/37+a+Wf9A/IjtAPI3+lvi7/wHaFUA/t3gj/xn9A8NT9g4onyh/8B4/fZPmz/2/8a9OP+6/lP9K/bX3Q/NX/K/lH9e903/M/yr+niqc... | [{"identifier": "A", "content": "(iii) < (i) < (ii) < (iv) < (v)"}, {"identifier": "B", "content": "(iii) < (iv) < (ii) < (i) < (v)"}, {"identifier": "C", "content": "(v) < (i) < (iv) < (ii) < (iii)"}, {"identifier": "D", "content": "(v) < (iii) < (ii) < (iv) < (i)"}] | ["D"] | null | Basicity is inversly proportional to electronegativity.
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267761/exam_images/g2arzmpzgymb04zkzesg.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 9th January Morning Slot Chemistry - Basic... | mcq | jee-main-2020-online-9th-january-morning-slot | 390 |
NEvGHXOhrcaQv6XIs51kltb6dy8 | chemistry | basics-of-organic-chemistry | acid-and-base-strength | The correct order of acid character of the following compounds is :<br/><br/><img src="data:image/png;base64,UklGRhgPAABXRUJQVlA4IAwPAACwVwCdASr0AbYAPm02mEikIyKhIfTpsIANiWlu/GwY3cutf0DwnjfB/8o/H3wK/un9T/aL0F/FvnP7l+VfqLfAHT6/GPd1fDfyT+1f8n0x/z38f/GP0790/9p/FPYO9R/3v+Q/tJ/U/TX/rv4B/S+/Qrj+lvsBe2fzL/Lfw/+o/rb58f8f/KPU36j... | [{"identifier": "A", "content": "IV > III > II > I"}, {"identifier": "B", "content": "III > II > I > IV"}, {"identifier": "C", "content": "II > III > IV > I"}, {"identifier": "D", "content": "I > II > III > IV"}] | ["C"] | null | Acidic strength<br><br>
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263579/exam_images/qokgoqpqceucvnuugjjg.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Basics of Organic Chemistry Questi... | mcq | jee-main-2021-online-25th-february-evening-slot | 392 |
1krxbaywt | chemistry | basics-of-organic-chemistry | acid-and-base-strength | Which among the following is the strongest acid ? | [{"identifier": "A", "content": "$$C{H_3}C{H_2}C{H_2}C{H_3}$$"}, {"identifier": "B", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734265546/exam_images/q8nxyw1afbwlnto6uecd.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2021 (On... | ["D"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265398/exam_images/tj6i4b5i3ku5kfeyvs8m.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Basics of Organic Chemistry Question 125 English Explanation 1... | mcq | jee-main-2021-online-25th-july-evening-shift | 393 |
1l58jo8oj | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>The correct order of nucleophilicity is</p> | [{"identifier": "A", "content": "F<sup>$$-$$</sup> > OH<sup>$$-$$</sup>"}, {"identifier": "B", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l5b2q72p/b3ac25cf-bec9-438c-8801-4ec71c8b4e2a/fcc1dc10-fdf9-11ec-af34-3f696e072fc8/file-1l5b2q72q.png?format=png\" data-orsrc=\"https://app-content... | ["D"] | null | $$\underset{\text { Acid }}{\mathrm{NH}_{3}} \longrightarrow \underset{\text { Conjugate base }}{\mathrm{NH}_{2}^{-}}+\mathrm{H}^{+}$$<br/><br/>
Conjugate base of acid is always a stronger nucleophile. | mcq | jee-main-2022-online-26th-june-evening-shift | 394 |
1l5c6sycq | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>Which of the following is an example of conjugated diketone?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l5d0y0ot/a2100e55-a68c-4178-9dc6-848b10dcbe01/95568ad0-ff0c-11ec-834d-4120b930ffb4/file-1l5d0y0ou.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l5d0y0ot/a2100e55-a68c-4178-9dc6-848b10dcbe01/955... | ["C"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l5d0ywkc/0975f508-01e1-4cdd-9f40-c636ddc7fbcf/adf619c0-ff0c-11ec-834d-4120b930ffb4/file-1l5d0ywkd.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l5d0ywkc/0975f508-01e1-4cdd-9f40-c636ddc7fbcf/adf619c0-ff0c-11ec-834d-4120b930ffb4/fi... | mcq | jee-main-2022-online-24th-june-morning-shift | 395 |
1l6mdey0x | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>Among the following marked proton of which compound shows lowest $$\mathrm{pK}_{\mathrm{a}}$$ value?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l6qsch5x/3c46f17e-d28d-4fbd-a802-28eb0569c556/25b38150-1a6a-11ed-9fca-fdfa82878a71/file-1l6qsch5y.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l6qsch5x/3c46f17e-d28d-4fbd-a802-28eb0569c556/25b... | ["C"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7ox3vh5/4b92ac73-2ca4-4807-8c11-3b6294fb7012/6a334090-2d2f-11ed-b144-5949e1cb6ba8/file-1l7ox3vh6.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7ox3vh5/4b92ac73-2ca4-4807-8c11-3b6294fb7012/6a334090-2d2f-11ed-b144-5949e1cb6ba8... | mcq | jee-main-2022-online-28th-july-morning-shift | 397 |
1ldukzg76 | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>The correct order in aqueous medium of basic strength in case of methyl substituted amines is :</p> | [{"identifier": "A", "content": "$$\\mathrm{NH_3 > Me_3N > MeNH_2 > Me_2NH}$$"}, {"identifier": "B", "content": "$$\\mathrm{Me_3N > Me_2NH > MeNH_2 > NH_3}$$"}, {"identifier": "C", "content": "$$\\mathrm{Me_2NH > MeNH_2 > Me_3N > NH_3}$$"}, {"identifier": "D", "content": "$$\\mathrm{Me_2NH > Me_3N > MeNH_2 > NH_3}$$"}] | ["C"] | null | In aqueous medium basic strength is dependent on electron density on nitrogen as well as solvation of cation formed after accepting $\mathrm{H}^{+}$. After considering all these factors overall basic strength order is<br/><br/>
$$
\mathrm{Me}_2 \mathrm{NH}>\mathrm{MeNH}_2>\mathrm{Me}_3 \mathrm{N}>\mathrm{NH}_3
$$ | mcq | jee-main-2023-online-25th-january-morning-shift | 398 |
1lgysi9xv | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>The descending order of acidity for the following carboxylic acid is-</p>
<p>A. $$\mathrm{CH}_{3} \mathrm{COOH}$$</p>
<p>B. $$\mathrm{F}_{3} \mathrm{C}-\mathrm{COOH}$$</p>
<p>C. $$\mathrm{ClCH}_{2}-\mathrm{COOH}$$</p>
<p>D. $$\mathrm{FCH}_{2}-\mathrm{COOH}$$</p>
<p>E. $$\mathrm{BrCH}_{2}-\mathrm{COOH}$$</p>
<p>Choos... | [{"identifier": "A", "content": "B > C > D > E > A"}, {"identifier": "B", "content": "D > B > A > E > C"}, {"identifier": "C", "content": "B > D > C > E > A"}, {"identifier": "D", "content": "E > D > B > A > C"}] | ["C"] | null | <p>The acidity of carboxylic acids is influenced by the electron-withdrawing ability of the groups attached to the carboxylic acid. The stronger the electron-withdrawing ability of the group, the more it stabilizes the carboxylate anion (formed after losing the acidic proton), and hence the stronger the acid. </p>
<p>L... | mcq | jee-main-2023-online-8th-april-evening-shift | 399 |
jaoe38c1lsc4v7ll | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>Which of the following is strongest Bronsted base?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lscurmik/34f6af28-88b1-4017-b55a-bc8ec4218eb8/66796fc0-c64d-11ee-9d8b-f1be86a1b2f3/file-6y3zli1lscurmil.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/6y3zli1lscurmik/34f6af28-88b1-4017-b55... | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lscv777l/54c27bcb-fe40-442b-ac8c-f577502331f0/17991b10-c64f-11ee-9d8b-f1be86a1b2f3/file-6y3zli1lscv777m.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lscv777l/54c27bcb-fe40-442b-ac8c-f577502331f0/17991b10-c64f-11ee-9d... | mcq | jee-main-2024-online-27th-january-morning-shift | 400 |
jaoe38c1lsfmrppj | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>The ascending acidity order of the following H atoms is</p>
<p><img src="data:image/png;base64,UklGRogSAABXRUJQVlA4IHwSAACwbACdASoAA7YAPm02mUikIyKhI9OJEIANiWlu4XaxG/OH8jf2vtf/yX9s/azsYPa2fRlr7G9S/5N9sP1/939tP8L3x+rX1AvyT+cf77es7TegL69fVP9x/c/IJ/z/Qv7F+wBwPtAT+g/5z1aP7v/5/6z0DfVn7W/Ad/Pf7r/3exP6OgvTz1xmlBTz1xmk/3rkJ4... | [{"identifier": "A", "content": "A < B < D < C"}, {"identifier": "B", "content": "A < B < C < D"}, {"identifier": "C", "content": "D < C < B < A"}, {"identifier": "D", "content": "C < D < B < A"}] | ["D"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lsr826zp/1ad05e17-72df-4136-a4e4-5e35529ab4de/5c276150-ce34-11ee-9412-cd4f9c6f2c40/file-6y3zli1lsr826zq.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lsr826zp/1ad05e17-72df-4136-a4e4-5e35529ab4de/5c276150-ce34-11ee... | mcq | jee-main-2024-online-29th-january-evening-shift | 402 |
luz2v43e | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>Correct order of basic strength of Pyrrole <img src="data:image/png;base64,UklGRhASAABXRUJQVlA4IAQSAABQIAGdASqRAgADP4HA3GS2MS2nIxOJGsAwCWlu8p8dzTwiN+fDPU8Z+dT0nsZfVf/3wQaHOtz3//X/gZ/pSqv//uDSp2yqev///aOYC5NaiAdBC3Dc+oA6CFuG59QB0EFEpJVUtzlCSjs141XeGBSSrXjVd4YCapNRtjgmlWvH+JKtUYTmawdrgCczQsBwv0EFIEHrKHyGlgjD5DSwRh8hpQ... | [{"identifier": "A", "content": "Pyridine > Piperidine > Pyrrole\n"}, {"identifier": "B", "content": "Pyrrole > Piperidine > Pyridine\n"}, {"identifier": "C", "content": "Pyrrole > Pyridine > Piperidine\n"}, {"identifier": "D", "content": "Piperidine > Pyridine > Pyrrole"}] | ["D"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lw3o0hgt/b1877545-4a83-425a-b522-7765c603cec4/cc9fa1d0-1070-11ef-8cff-79379262c1ff/file-1lw3o0hgu.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lw3o0hgt/b1877545-4a83-425a-b522-7765c603cec4/cc9fa1d0-1070-11ef-8cff-79379262c1ff... | mcq | jee-main-2024-online-9th-april-morning-shift | 403 |
luz2v48g | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>For the given compounds, the correct order of increasing $$\mathrm{pK}_{\mathrm{a}}$$ value :</p>
<p><img src="data:image/png;base64,UklGRrQMAABXRUJQVlA4IKgMAACwmwCdASpIAQADP4G412W2LSwnIZBpysAwCWlu4W+0XmNwu556743b3YQ3FO4X+T79frGPu+9+G33yvY3/97/gSmcdoXLEo8oLi6cw+/sciqr+xoc9elfHTclYvRO6hjKMwBz3YHPVMLlo3IwplNg45HkYayjM... | [{"identifier": "A", "content": "(E) $$<(\\mathrm{D})<(\\mathrm{C})<(\\mathrm{B})<(\\mathrm{A})$$\n"}, {"identifier": "B", "content": "(B) $$<(\\mathrm{D})<(\\mathrm{A})<(\\mathrm{C})<(\\mathrm{E})$$\n"}, {"identifier": "C", "content": "(D) < (E) < (C) < (B) < (A)\n"}, {"identifier": "D", "content": "(E) $$<(\\mathrm{D... | ["B"] | null | <p>Higher the electron withdrawing strength of substituents higher will be acidic strength of phenols and lesser will be $$\mathrm{pK}_{\mathrm{a}}$$</p> | mcq | jee-main-2024-online-9th-april-morning-shift | 404 |
lvc58emw | chemistry | basics-of-organic-chemistry | acid-and-base-strength | <p>Functional group present in sulphonic acids is :</p> | [{"identifier": "A", "content": "$$-$$SO$$_2$$"}, {"identifier": "B", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1lvc2m6lr/1dade754-09b4-48a2-98bc-a29ee1f4ba67/f5a877f0-0143-11ef-9994-d5a6f8729fd1/file-1lvc2m6ls.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1... | ["C"] | null | <p>$$-\mathrm{SO}_3 \mathrm{H}$$ is functional group in sulphonic acids. </p> | mcq | jee-main-2024-online-6th-april-morning-shift | 407 |
3ObavSJcWCQNENNkKlpEn | chemistry | basics-of-organic-chemistry | aromaticity | Which of the following compounds is most reactive to an aqueous solution of sodium
carbonate ? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266847/exam_images/dlgtwohkkppwlxl4ulb9.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Basics of Organic Che... | ["C"] | null | <p>Among the given compounds, cyclopentadiene is most reactive to an aqueous solution of sodium carbonate. It forms cyclopentadienyl anion which is aromatic and therefore, highly stable.</p>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3pd0euh/e787df04-1b95-4bc5-aa13-d61de1ed6aaa/be7a4190-de3c-11e... | mcq | jee-main-2017-online-9th-april-morning-slot | 408 |
Nx5LK7SXMJXuGrm4 | chemistry | basics-of-organic-chemistry | aromaticity | Which of the following molecules is least resonance stabilized? | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l7yn6l36/bcb2ea47-6f1e-4e39-89d6-69878a98c87f/70ce4220-3288-11ed-8893-19b23ee4c66d/file-1l7yn6l37.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l7yn6l36/bcb2ea47-6f1e-4e39-89d6-69878a98c87f/70c... | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265996/exam_images/afxthi1bkg2hdwkjpghj.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2017 (Offline) Chemistry - Basics of Organic Chemistry Question 208 English Explanation"> | mcq | jee-main-2017-offline | 409 |
PMO7mSlgPt5WQgZe81Fy4 | chemistry | basics-of-organic-chemistry | aromaticity | Which of the following compounds is not aromatic ? | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l8p916r2/a376526e-f09c-4e22-bf64-6e7f9374cc1a/446958e0-412a-11ed-a864-6db2254ccf9e/file-1l8p916r3.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l8p916r2/a376526e-f09c-4e22-bf64-6e7f9374cc1a/446... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8p916r2/a376526e-f09c-4e22-bf64-6e7f9374cc1a/446958e0-412a-11ed-a864-6db2254ccf9e/file-1l8p916r3.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l8p916r2/a376526e-f09c-4e22-bf64-6e7f9374cc1a/446958e0-412a-11ed-a864-6db2254ccf9e/fi... | mcq | jee-main-2019-online-9th-january-evening-slot | 410 |
rftHUIZx1l5km3fFzMjAX | chemistry | basics-of-organic-chemistry | aromaticity | Among the following four aromatic compounds, which one will have the lowest melting point ? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734265725/exam_images/rucrnfn7vd8zfg15q0bn.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic ... | ["B"] | null | More the intermolecular interaction more will be the
melting point. Among the given, naphthalene has least
intermolecular interaction and hence it has lowest melting point.
<br><br>M.P. of Napthalene = 80°C | mcq | jee-main-2019-online-12th-january-morning-slot | 411 |
pOEsro08CnBNZmCqWO1klrtwrq2 | chemistry | basics-of-organic-chemistry | aromaticity | Which one of the following compounds is non-aromatic? | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1la25w7cc/57f34830-e795-4ff6-8ec3-508d1b5aa9f6/664196c0-5c10-11ed-b429-1bdcfc436fa3/file-1la25w7cd.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1la25w7cc/57f34830-e795-4ff6-8ec3-508d1b5aa9f6/664... | ["D"] | null | <p>Molecules are aromatic if they are</p>
<p>(1) Cyclic</p>
<p>(2) Planar</p>
<p>(3) Conjugated</p>
<p>(4) Molecules who have (4n + 2) $$\pi$$ electrons [This is called Huckel's Rule]</p>
<p>Aromatic compounds are highly stable.</p>
<p>(a) <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3wne3sx/d0a68a... | mcq | jee-main-2021-online-24th-february-evening-slot | 412 |
LfajMFMaeYC6rDKMnk1kmhtca0r | chemistry | basics-of-organic-chemistry | aromaticity | Among the following, the aromatic compounds are :<br/><br/><img src="data:image/png;base64,UklGRpAPAABXRUJQVlA4IIQPAAAwWQCdASqwAe4APm02mEikIyKhIrD54IANiWlu57AOEVnfx50eKboJ/wT/KO1P+u+Ivj+8pez/qOf0XRqf039g/iPoy+rn4H+a/z7/ofG/9i/2n8r8XeAF60/x38T/pnmQ/3H8A/o/fMwd+wF7c/S/9J/LP6Z/xP8Z50n7f/KP4x/y/cr6vf6D3AP1B/138v/qH64/Nn/E/... | [{"identifier": "A", "content": "(B), (C) and (D) only"}, {"identifier": "B", "content": "(B) and (C) only"}, {"identifier": "C", "content": "(A), (B) and (C) only"}, {"identifier": "D", "content": "(A) and (B) only"}] | ["B"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1kxg5nzcm/3874f58d-ccb9-4b4b-ab31-2013ceef4ba6/aac64e50-6263-11ec-8413-4354488bad2d/file-1kxg5nzcn.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1kxg5nzcm/3874f58d-ccb9-4b4b-ab31-2013ceef4ba6/aac64e50-6263-11ec-8413-4354488bad2d/fi... | mcq | jee-main-2021-online-16th-march-morning-shift | 413 |
rmrncMG2Dp7UIpDFNT1kmj7xugt | chemistry | basics-of-organic-chemistry | aromaticity | Which of the following is an aromatic compound? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734265251/exam_images/ukhklnqdlae6nn97pu9p.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Basics of Organic Che... | ["A"] | null | A compound which has (4n + 2)$$\pi $$ electrons
completely delocalised over the cyclic ring is
aromatic.
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265251/exam_images/ukhklnqdlae6nn97pu9p.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 202... | mcq | jee-main-2021-online-17th-march-morning-shift | 414 |
1ktcrb38n | chemistry | basics-of-organic-chemistry | aromaticity | Which one of the following compounds is not aromatic? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266681/exam_images/qnwlve1aesabyeg8nlwu.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2021 (Online) 26th August Evening Shift Chemistry - Basics of Organic Ch... | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266253/exam_images/cwhtfahzy5rvjka7hn9e.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263491/exam_images/jfvnvop1ptuxtky8wkyr.webp"><source media="(max-wid... | mcq | jee-main-2021-online-26th-august-evening-shift | 415 |
1ktn0tthd | chemistry | basics-of-organic-chemistry | aromaticity | Which one of the following compounds is aromatic in nature? | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1kwlzz51y/6dc15c03-65af-42c5-be3f-f1cd9f35a3eb/e6d30f60-51cd-11ec-9844-f70c287671ef/file-1kwlzz51z.jpeg?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1kwlzz51y/6dc15c03-65af-42c5-be3f-f1cd9f35a3eb/e6... | null | null | (a) (Acenaphthene)<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1kwlzz51y/6dc15c03-65af-42c5-be3f-f1cd9f35a3eb/e6d30f60-51cd-11ec-9844-f70c287671ef/file-1kwlzz51z.jpeg?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1kwlzz51y/6dc15c03-65af-42c5-be3f-f1cd9f35a3eb/e6d30f60-51... | mcqm | jee-main-2021-online-1st-september-evening-shift | 416 |
1l56b1o5f | chemistry | basics-of-organic-chemistry | aromaticity | <p>Which of the following structure are aromatic in nature?</p>
<p><img src="data:image/png;base64,UklGRsYKAABXRUJQVlA4ILoKAACwgwCdASoAA+kAP4G81WU2LqunIrKKCsAwCWlu/HyXulfHZ18/sLaI/pO7p/h89nZTigoof2vJ3/J6MtaS///UT9+i7RYsVVVVVVVVVVUsASh0/a1afWGtx8H+466DSEXLf0144FXDWKjW8f9lVVVVVVVVTWCaCqgqoWwrclAHi0MIq2IPpi9HzjiaRykUdtU6a... | [{"identifier": "A", "content": "A, B, C, and D"}, {"identifier": "B", "content": "Only A and B"}, {"identifier": "C", "content": "Only A and C"}, {"identifier": "D", "content": "Only B, C and D"}] | ["B"] | null | <b>A</b> and <b>B</b> are aromatic as they are cyclic, planar and has $4 n+2 \pi e^{-}(n=1)$ | mcq | jee-main-2022-online-28th-june-morning-shift | 417 |
1l56xvxit | chemistry | basics-of-organic-chemistry | aromaticity | <p>Which of the following is most stable?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l58n4ezz/620eb5f0-8b4b-4f46-833a-c2538a458c47/64d767f0-fca3-11ec-af50-7b1dc1e93a30/file-1l58n4f00.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l58n4ezz/620eb5f0-8b4b-4f46-833a-c2538a458c47/64d... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l9bnirf1/0cfd3328-d54f-4fc2-8177-c7c567bb1cc8/2b39dfd0-4d7c-11ed-8be8-3ff328877179/file-1l9bnirf2.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l9bnirf1/0cfd3328-d54f-4fc2-8177-c7c567bb1cc8/2b39dfd0-4d7c-11ed-8be8-3ff328877179/fi... | mcq | jee-main-2022-online-27th-june-evening-shift | 418 |
1l6i5gutf | chemistry | basics-of-organic-chemistry | aromaticity | <p>Which of the following is not an example of benzenoid compound?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l6kpmbb2/3400e598-3abe-4f8b-937f-6b4dbe1082ec/c7fbede0-1712-11ed-8e2a-2927a6806d88/file-1l6kpmbb3.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l6kpmbb2/3400e598-3abe-4f8b-937f-6b4dbe1082ec/c7f... | null | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l6kpmv2g/7e4b51fd-cf72-4501-ac24-49d1f6da58b3/d74002a0-1712-11ed-8e2a-2927a6806d88/file-1l6kpmv2i.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l6kpmv2g/7e4b51fd-cf72-4501-ac24-49d1f6da58b3/d74002a0-1712-11ed-8e2a-2927a6806d88/fi... | mcqm | jee-main-2022-online-26th-july-evening-shift | 420 |
1l6jltch1 | chemistry | basics-of-organic-chemistry | aromaticity | <p>Given below are two statements: one is labelled as Assertion A and, the other is labelled as Reason R.</p>
<p>Assertion A: [6] Annulene, [8] Annulene and cis-[10] Annulene, are respectively aromatic, not-aromatic and aromatic.</p>
<p><img src="data:image/png;base64,UklGRgYNAABXRUJQVlA4IPoMAACQjwCdASoAA+IAP4G+12O2MCw... | [{"identifier": "A", "content": "Both A and R are correct and R is the correct explanation of A."}, {"identifier": "B", "content": "Both A and R are correct but R is NOT the correct explanation of A."}, {"identifier": "C", "content": "A is correct but R is not correct."}, {"identifier": "D", "content": "A is not correc... | ["D"] | null | [6] Annulene is aromatic because it is planar.
<br/><br/>
[8] Annulene and [10] Annulene are both not aromatic because they are not planar. So, Assertion (A) is not correct.
<br/><br/>
Reason (R) is correct because planarity is one of the requirements of aromatic system. | mcq | jee-main-2022-online-27th-july-morning-shift | 421 |
1l6md3u3y | chemistry | basics-of-organic-chemistry | aromaticity | <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) - (II), (B) - (I), (C) - (IV), (D) - (III)"}, {"identifier": "B", "content": "(A) - (IV), (B) - (III), (C) - (I), (D) - (II)"}, {"identifier": "C", "content": "(A) - (III), (B) - (IV), (C) - (I), (D) - (II)"}, {"identifier": "D", "content": "(A) - (IV), (B) - (III), (C) - (II), (D) ... | ["C"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7owvlhd/6d3b8a9a-62b5-4c8a-aa36-7a2b3875a643/8401a800-2d2e-11ed-b144-5949e1cb6ba8/file-1l7owvlhe.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7owvlhd/6d3b8a9a-62b5-4c8a-aa36-7a2b3875a643/8401a800-2d2e-11ed-b144-5949e1cb6ba8/fi... | mcq | jee-main-2022-online-28th-july-morning-shift | 422 |
1lgp2yz2n | chemistry | basics-of-organic-chemistry | aromaticity | <p>Given below are two statements :</p>
<p>Statement I : Tropolone is an aromatic compound and has $$8 \pi$$ electrons.</p>
<p>Statement II : $$\pi$$ electrons of $$ > \mathrm{C}=\mathrm{O}$$ group in tropolone is involved in aromaticity.</p>
<p>In the light of the above statements, choose the correct answer from th... | [{"identifier": "A", "content": "Statement I is false but Statement II is true"}, {"identifier": "B", "content": "Both Statement I and Statement II are false"}, {"identifier": "C", "content": "Statement I is true but Statement II is false"}, {"identifier": "D", "content": "Both Statement I and Statement II are true"}] | ["B"] | null | <p>Let's analyze the structure of tropolone to evaluate the given statements.</p>
<p>1. <strong>Statement I:</strong> "Tropolone is an aromatic compound and has $$8 \pi$$ electrons."</p>
<p>Tropolone is a seven-membered ring compound with an oxygen atom attached to it through a double bond, creating a carbonyl group ... | mcq | jee-main-2023-online-13th-april-evening-shift | 423 |
1lgq47te0 | chemistry | basics-of-organic-chemistry | aromaticity | <p>Among the following compounds, the one which shows highest dipole moment is</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1lgqz47bf/5f24028e-8fdf-4ee0-ad03-86cc255d5abd/c9507db0-e07e-11ed-baf9-87204e3a7c88/file-1lgqz47bg.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1lgqz47bf/5f24028e-8fdf-4ee0-ad03-86cc255d5abd/c95... | ["D"] | null | Among the given compounds, the following compound has the highest dipole moment because both the +ve and -ve ends acquire aromaticity.<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lh1pxxvc/2c6fe5e5-70fb-4408-a754-cbb5b2835c16/8824b380-e667-11ed-b7c9-957e12d0338a/file-1lh1pxxvd.png?format=png... | mcq | jee-main-2023-online-13th-april-morning-shift | 424 |
jaoe38c1lsc5shfh | chemistry | basics-of-organic-chemistry | aromaticity | <p>Cyclohexene</p>
<p><img src="data:image/png;base64,UklGRooLAABXRUJQVlA4IH4LAABw8gCdASr0AgADP4HA4GU2MrAnIlUYmsAwCWlu/Gf4+UFv6B4T+fpP9Y/dJuHe4uvbsUcAX/8zE///eD+Hfr+VjUAff/1vq8Mv+ZB+/4X0hFYFr8gKqA/vDmsC1+QFVAf3hzWBa/ICqgP7w5rAiiZs+f/7iR/vR2vlUGgufDBfhjv7w5rAtfkBVQH94c1gWvyAqfZov/q3x6+msQyf/6us+MmZEckpYEkvT4NQN41Iu75AME... | [{"identifier": "A", "content": "Benzenoid aromatic\n"}, {"identifier": "B", "content": "Benzenoid non-aromatic\n"}, {"identifier": "C", "content": "Acyclic\n"}, {"identifier": "D", "content": "Alicyclic"}] | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lstck37h/46edc5d3-1b2a-4aa7-ac29-3ddb4e69b247/839c5ed0-cf5f-11ee-b59c-cfafc3a54885/file-1lstck37i.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lstck37h/46edc5d3-1b2a-4aa7-ac29-3ddb4e69b247/839c5ed0-cf5f-11ee-b59c-cfafc3a54885/fi... | mcq | jee-main-2024-online-27th-january-morning-shift | 425 |
jaoe38c1lsc6mkl7 | chemistry | basics-of-organic-chemistry | aromaticity | <p>Among the given organic compounds, the total number of aromatic compounds is</p>
<p><img src="data:image/png;base64,UklGRlwSAABXRUJQVlA4IFASAABQ+ACdASovAgADP4G+2WU2L6ynItPJasAwCWlu/Bw1OKXGCj7r5U3Qc/oX9f8g5xH/ZdsjOf/49+P5D+0///UCd0///oBef/UKqwfon9H//9/+JvfOx++dj987H752P3zsfvnT317nDVWZEVwj23ubaT+5pzhqrMwB31/3fXucNPSj/... | [] | null | 3 | B, C and D are Aromatic. | integer | jee-main-2024-online-27th-january-morning-shift | 426 |
lv40vbge | chemistry | basics-of-organic-chemistry | aromaticity | <p>Total number of aromatic compounds among the following compounds is ______.</p>
<p><img src="data:image/png;base64,UklGRiwTAABXRUJQVlA4ICATAAAwaQCdASoAA74APm0wlkkkIqGhInBqAIANiWlu5KgXG4Xo7Ouz9R/7L3Af4DpPfaefvj/7DNTX5p9m/yX9x9q/7L3o+qr1BfXP9z+1P1LfrZ3Yu0f670CPYb65/vv7j6wn039y9Efst9AH2Afk3xvtAT+ff2f/r/3j3Zf5//5/4jzp/S... | [] | null | 1 | <p>The aromatic compounds is <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lw5ag0p4/33558ce6-bfb1-4c92-9a92-36455f15ced1/4e1b5080-1155-11ef-8eaf-b190038b8109/file-1lw5ag0p5.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lw5ag0p4/33558ce6-bfb1-4c92-9a92-36455f15ced1/4e1b5080-1... | integer | jee-main-2024-online-8th-april-evening-shift | 427 |
A9DlvJoYelzEnvRh | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Arrangement of (CH<sub>3</sub>)<sub>3</sub>C-, (CH<sub>3</sub>)<sub>2</sub>CH-, CH<sub>3</sub>-CH<sub>2</sub>- when attached to benzyl or an unsaturated group in increasing order of inductive effect is | [{"identifier": "A", "content": "(CH<sub>3</sub>)<sub>3</sub>C- < (CH<sub>3</sub>)<sub>2</sub>CH- < CH<sub>3</sub>-CH<sub>2</sub>"}, {"identifier": "B", "content": "CH<sub>3</sub>-CH<sub>2</sub>- < (CH<sub>3</sub>)<sub>2</sub>CH- < (CH<sub>3</sub>)<sub>3</sub>C-"}, {"identifier": "C", "content": "(CH<sub>3... | ["B"] | null | $$ - C{H_3}$$ group has $$+I$$ effect, as number of $$ - C{H_3}$$ group increases, the inductive effect increases.
<br><br>Therefore the correct order is
<br><br>$$C{H_3} - C{H_2} - < {\left( {C{H_3}} \right)_2}CH - < {\left( {C{H_3}} \right)_3}C - $$
| mcq | aieee-2002 | 429 |
3PR85jqfqrMNzZ1d | chemistry | basics-of-organic-chemistry | electron-displacement-effect | In the anion HCOO<sup>$$-$$</sup>
the two carbon-oxygen bonds are found to be of equal length. What is the reason for it? | [{"identifier": "A", "content": "The C = O bond is weaker than the C-O bond"}, {"identifier": "B", "content": "The anion HCOO-\n has two resonating structures"}, {"identifier": "C", "content": "The anion is obtained by removal of a proton from the acid molecule"}, {"identifier": "D", "content": "Electronic orbitals of ... | ["B"] | null | The anion is
<br><br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267382/exam_images/mx0e5i9m8lsrvarz23f6.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="AIEEE 2003 Chemistry - Basics of Organic Chemistry Question 232 English Explanation 1">
<br><br>$... | mcq | aieee-2003 | 430 |
r49q56MMNfbx39oL | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Rate of the reaction
<br/><br/><img src="data:image/png;base64,UklGRkQIAABXRUJQVlA4IDgIAABQXgCdASoAA98AP4HA2WW2MCynIbOpKsAwCWlu/HyZVOtQ2f1/tAbO3tHliw/WV+sVnmg07fa5d/3FnfKKXuLO+UUvcWd8ope4s75RS9xXSZ4s6HKP+4s75RS9xZ3u5lCY39Cl7izvlFL3FnbNKHV/JK6JLKvgRtstxZ3yil7izvlCGrXitOuvkA+jebD0x+bvJdT7yrss75RS8Mp+pILxlma31uJARurIohxZ3... | [{"identifier": "A", "content": "$$O{C_2}{H_5}$$ "}, {"identifier": "B", "content": "$$N{H_2}$$ "}, {"identifier": "C", "content": "$$Cl$$ "}, {"identifier": "D", "content": "$$OCOC{H_3}$$ "}] | ["C"] | null | $$C{l^ - }$$ is the best leaving group among the given option. | mcq | aieee-2004 | 431 |
TGOQoIRLqWj8AIzQ | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Presence of a nitro group in a benzene ring | [{"identifier": "A", "content": "activates the ring towards electrophilic substitution "}, {"identifier": "B", "content": "renders the ring basic "}, {"identifier": "C", "content": "deactivates the ring towards nucleophilic substitution "}, {"identifier": "D", "content": "deactivates the ring towards electrophilic subs... | ["D"] | null | Nitro group is electron withdrawing group, so it deactivities the ring towards electrophilic substitution. | mcq | aieee-2007 | 433 |
CIbTkJeoFNcvZuYoX44uD | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Which of the following compounds will show highest dipole moment ?
<br/><br/><img src="data:image/png;base64,UklGRswSAABXRUJQVlA4IMASAADQwgCdASoAA6wBP4G+12W2L6wnIlKZWsAwCWlu/HyZFlfHZ19fqp/p+3zlRdv3BnHU9v/ZLwC/yT+h/p17lD/twR5b9HScf+qaOvS7wlTz//15//P8RkWN3rG71jd6xu9Y3esbvWN3rG71jd6pUTklFs1ms1ms1ms1ms1ms1ms1ms1ms1lzfJUwMd... | [{"identifier": "A", "content": "(I)"}, {"identifier": "B", "content": "(II)"}, {"identifier": "C", "content": "(III)"}, {"identifier": "D", "content": "(IV)"}] | ["A"] | null | <p>2-Cyclopropen-1-one cation is a cyclic $$\pi $$-system with two electrons. It has highest dipole moment which can be explained on the basis that the dipolar resonance structure contributes more to the resonance hybrid as it involves stable aromatic cyclopropenyl cation.</p>
<img src="https://app-content.cdn.examgoal... | mcq | jee-main-2017-online-9th-april-morning-slot | 434 |
JtLbBDMo8WgfzgfgJTEbd | chemistry | basics-of-organic-chemistry | electron-displacement-effect | On treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is :
<br/><img src="data:image/png;base64,UklGRpIKAABXRUJQVlA4IIYKAAAwmwCdASoAA1EBP4HA3GQ2Ma2mo7a5AsAwCWlu4XCBG/Ph9D/77HAG1P/Vzydk/4p/Cfvb0TcZFwF5/9TysV/Pfzn//4A3//EsMCcw4E19fU+32vtfEBCvOGjAnMOBK9pyKfYJb94gimAThowJ0... | [{"identifier": "A", "content": "Cl $$-$$ O2"}, {"identifier": "B", "content": "O2 $$-$$ C3"}, {"identifier": "C", "content": "C4 $$-$$ O5"}, {"identifier": "D", "content": "O5 $$-$$ C6"}] | ["D"] | null | Here the lone pair of electrons on O2 is involved in resonace with C = C.
<br>So, O2 will not be protonated.
<br><br>The lone pair electrons of O5 is not involved in resonance with any C = C. So, O5 can be protonated.
<br><br>When we use strong acid like HCl then chloride ion will attack least substitute... | mcq | jee-main-2018-online-15th-april-evening-slot | 435 |
WQk2gl6sfpuvQItKZwnqB | chemistry | basics-of-organic-chemistry | electron-displacement-effect | In the following compound,
<br/><br/><img src="data:image/png;base64,UklGRk4YAABXRUJQVlA4IEIYAACwywCdASpMAhoCP4G812W2LywnIjHpesAwCWlu/CoZGutQ2/1s/x39p8Xf8ls7N3/4ndI9i/AC9U/q57jL4RwFiN4F/33oj9Lu/KPL/+n78ejP9+/+H7+cSwUtlci/K5F+VyL8rkX5XIvyuRboAvF4vF4vF4vF4vF4vF4vF4vF4ytarVarVarVarVarVarVaoXHCbVZet3GQ8Zg3a5UOumJG8XjK1qt... | [{"identifier": "A", "content": "(b), (c) and (d)"}, {"identifier": "B", "content": "(a) and (e) "}, {"identifier": "C", "content": "(a) and (d) "}, {"identifier": "D", "content": "(a) "}] | ["A"] | null | At (a) position lone pair of N atom is in resonance with $$\pi $$ bond so lone pair can't donate easily to H<sup>+</sup> ion.
<br><br>At (b) position N atom is directly connected with double bond so lone pair of N atom don't perticipate in resonance so lone pair can be donated easily to H<sup>+</sup> ion.
<br><br>At (c... | mcq | jee-main-2019-online-11th-january-evening-slot | 436 |
lEUbfhXSYaSXJlL8pieTu | chemistry | basics-of-organic-chemistry | electron-displacement-effect | The increasing order of reactivity of the
following compounds towards aromatic
electrophilic substitution reaction is :
<img src="data:image/png;base64,UklGRswTAABXRUJQVlA4IMATAAAwwgCdASoAA2EBP4HA1mS2MCwnIzVpssAwCWlu+F+99XgS/+yWhQiaLr/rl/pu4f/m7ZJhP+j5r3tv/8e+neK/zH9P+EH7TzAvNvpzzqv1rSj6ZeEcee//PO3+3/n+LLpUOplQx9F8D1Mq... | [{"identifier": "A", "content": "A < B < C < D"}, {"identifier": "B", "content": "D < A < C < B"}, {"identifier": "C", "content": "D < B < A < C"}, {"identifier": "D", "content": "B < C < A < D"}] | ["B"] | null | In aromatic
electrophilic substitution reaction, electrofile attacks to the ring whose electron density is more.
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265070/exam_images/dqhgjbz6w8apuhqvjouv.webp"><source media="(max-width: 500px)" srcset="https://res... | mcq | jee-main-2019-online-9th-april-morning-slot | 437 |
lsX4IZ4iB7q7fZTtio3rsa0w2w9jwwep6a4 | chemistry | basics-of-organic-chemistry | electron-displacement-effect | The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is :
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264778/exam_images/qq4suslxqf5zrg3rdhp7.webp"/><source media="(max-width: 500px)" srcset... | [{"identifier": "A", "content": "III < II < I"}, {"identifier": "B", "content": "III < I < II"}, {"identifier": "C", "content": "II < I < III"}, {"identifier": "D", "content": "I < III < II"}] | ["B"] | null | CH<sub>3</sub> group increases
the electron density of benzene by +I effect and hyper
conjugation effects and hence makes the
compound more reactive towards electrophilic aromatic substitution reaction.
<br><br>Cl
group decreases the electron density of
benzene by –I effect.
<br><br>COCH<sub>3</sub> group
strongly decr... | mcq | jee-main-2019-online-10th-april-morning-slot | 438 |
OO0ptTctkbylzLMdE87k9k2k5ll2evo | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Which of the following has the shortest C-Cl
bond? | [{"identifier": "A", "content": "Cl\u2013CH=CH\u2013CH<sub>3</sub>"}, {"identifier": "B", "content": "Cl\u2013CH=CH\u2013NO<sub>2</sub>"}, {"identifier": "C", "content": "Cl\u2013CH=CH\u2013OCH<sub>3</sub>"}, {"identifier": "D", "content": "Cl\u2013CH=CH<sub>2</sub>"}] | ["B"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266974/exam_images/bvmvzjd1gjojgl1yltfe.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Basics of Organic Chemistry Question 154 English Explanation"... | mcq | jee-main-2020-online-9th-january-evening-slot | 439 |
jUxlxzipAAjPPXQBL2jgy2xukfq8xdwo | chemistry | basics-of-organic-chemistry | electron-displacement-effect | The increasing order of boiling points of the following compounds is :
<img src="data:image/png;base64,UklGRuAUAABXRUJQVlA4INQUAACwcQCdASqgAdgAPm00lUgkIqIhIzFr0IANiWlu/FuXnVfHZ12foh/FPyH8Dv7D/SP7H/pP7j6p/h/zT9k/r/7B+ob8AdPr/g/xz+U9977p/H/6d/tf6X+2H3h/Nf8z/If6h/u/7R6b+87+S/lfsBemP7d/D/6D/i/6v+73tL/2P8K/lHgD1d/RD2Bfa349/... | [{"identifier": "A", "content": "I < III < IV < II"}, {"identifier": "B", "content": "IV < I < II < III"}, {"identifier": "C", "content": "I < IV < III < II"}, {"identifier": "D", "content": "III < I < II < IV"}] | ["C"] | null | (I) Shows hydrogen bonding from –OH group only.
<br><br>(II) Shows strongest hydrogen bonding from both sides of –OH group as well as –NO<sub>2</sub> group.
<br><br>(III) Shows stronger hydrogen from both side of –OH group as well as –NH<sub>2</sub> group.
<br><br>(IV) Shows stronger hydrogen from one side –OH group ... | mcq | jee-main-2020-online-5th-september-evening-slot | 440 |
1krt3c423 | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Which of the following compounds does not exhibit resonance? | [{"identifier": "A", "content": "CH<sub>3</sub>CH<sub>2</sub>OCH = CH<sub>2</sub>"}, {"identifier": "B", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734267608/exam_images/obdcwm5tvm5wcfg2hdsh.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt... | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3zqw0eq/675dd49e-ce23-4936-9d21-0aaf68a20199/da63d810-e3f2-11ec-9b67-c3d1da53b94c/file-1l3zqw0er.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l3zqw0eq/675dd49e-ce23-4936-9d21-0aaf68a20199/da63d810-e3f2-11ec-9b67-c3d1da53b94c/fi... | mcq | jee-main-2021-online-22th-july-evening-shift | 441 |
1kruso62r | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Which one among the following resonating structures is not correct? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263997/exam_images/ewbyesirppwgl8ef4wzz.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2021 (Online) 25th July Morning Shift Chemistry - Basics of Organic Chem... | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263804/exam_images/z4fyw7xsrbt4badzzt4n.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 25th July Morning Shift Chemistry - Basics of Organic Chemistry Question 126 English Explanation">... | mcq | jee-main-2021-online-25th-july-morning-shift | 442 |
1ks1hjric | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Given below are two statements :<br/><br/>Statement I : Hyperconjugation is a permanent effect.<br/><br/>Statement II : Hyperconjugation in ethyl cation $$\left( {C{H_3} - \mathop C\limits^ + {H_2}} \right)$$ involves the overlapping of $${C_{s{p^2}}} - {H_{1s}}$$ bond with empty 2p orbital of other carbon.<br/><br/>C... | [{"identifier": "A", "content": "Both statement I and statement II are false"}, {"identifier": "B", "content": "Statement I is incorrect but statement II is true"}, {"identifier": "C", "content": "Statement I is correct but statement II is false"}, {"identifier": "D", "content": "Both statement I and statement II are t... | ["C"] | null | Statement I : It is correct statement<br><br>Statement II : $$C{H_3} - \mathop {C{H_2}}\limits^ \oplus $$ involve $${C_{s{p^3}}} - {H_{1s}}$$ bond with empty 2p orbital hence given statement is false. | mcq | jee-main-2021-online-27th-july-evening-shift | 443 |
1ktfrw0hi | chemistry | basics-of-organic-chemistry | electron-displacement-effect | The compound/s which will show significant intermolecular H-bonding is/are :<br/><br/><picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264929/exam_images/pxtwlxim3psbxddwjgqg.webp"/><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/... | [{"identifier": "A", "content": "(b) only"}, {"identifier": "B", "content": "(c) only"}, {"identifier": "C", "content": "(a) and (b) only"}, {"identifier": "D", "content": "(a), (b) and (c)"}] | ["A"] | null | (a) Shows intra molecular H-bonding<br><br>(b) Shows significant intermolecular H-bonding<br><br>(c) It do not show intermolecular H-bonding due to steric hindrance. | mcq | jee-main-2021-online-27th-august-evening-shift | 444 |
1l6nwslel | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>Arrange the following in increasing order of reactivity towards nitration</p>
<p>A. p-xylene</p>
<p>B. bromobenzene</p>
<p>C. mesitylene</p>
<p>D. nitrobenzene</p>
<p>E. benzene</p>
<p>Choose the correct answer from the options given below</p> | [{"identifier": "A", "content": "C < D < E < A < B"}, {"identifier": "B", "content": "D < B < E < A < C"}, {"identifier": "C", "content": "D < C < E < A < B"}, {"identifier": "D", "content": "C < D < E < B < A"}] | ["B"] | null | The correct order of reactivity towards nitration is<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7vxvrsu/2c5e8a71-27f2-4615-a662-5378e2aa4981/ee9029e0-310b-11ed-9c98-ad39d53b642b/file-1l7vxvrsv.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7vxvrsu/2c5e8a71-27f2-4... | mcq | jee-main-2022-online-28th-july-evening-shift | 445 |
1ldwuj8se | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R</p>
<p>Assertion A : Benzene is more stable than hypothetical cyclohexatriene</p>
<p>Reason R : The delocalised $$\pi$$ electron cloud is attracted more strongly by nuclei of carbon atoms.</p>
<p>In the light of the ... | [{"identifier": "A", "content": "A is true but R is false"}, {"identifier": "B", "content": "Both A and R are correct and R is the correct explanation of A"}, {"identifier": "C", "content": "Both A and R are correct but R is NOT the correct explanation of A"}, {"identifier": "D", "content": "A is false but R is true"}... | ["B"] | null | <p>Benzene is more stable than hypothetical cyclohexatriene due to the delocalization of electrons in the π electron cloud of the aromatic ring. This delocalization of electrons leads to a more stable electronic configuration in benzene, as the electrons are shared more evenly between all six carbon atoms in the ring. ... | mcq | jee-main-2023-online-24th-january-evening-shift | 447 |
1ldwv0ko2 | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>Which will undergo deprotonation most readily in the basic medium?</p>
<p><img src="data:image/png;base64,UklGRv4PAABXRUJQVlA4IPIPAABQUgCdASoAA20APm00l0ikIqIhIxEKEIANiWlu/HyYTMAe3ivlTdBG+H/8J2i/43+t/tN6D/i3zP99/qP7j+q9/AeLfzD+h8yf5B9pP2fr8/du+X4k6gX4x/Mf9J4S+w2tN6AXtP93/6Pha/2Pop9ev+R7gHBJUCP0h6sn9f41vpv2B/1q/6Hra+w... | [{"identifier": "A", "content": "a only"}, {"identifier": "B", "content": "Both a and c"}, {"identifier": "C", "content": "c only"}, {"identifier": "D", "content": "b only"}] | ["A"] | null | <p>Most easily deprotonation </p>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1le4eonzk/b7e1f2c9-b705-4588-b9c4-345de5c3602c/359e4e10-ac7d-11ed-9e9c-4b40aeba6a11/file-1le4eonzl.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1le4eonzk/b7e1f2c9-b705-4588-b9c4-345de5c3602c/359e4... | mcq | jee-main-2023-online-24th-january-evening-shift | 448 |
lsaoaihn | chemistry | basics-of-organic-chemistry | electron-displacement-effect | The set of meta directing functional groups from the following sets is : | [{"identifier": "A", "content": "$-\\mathrm{CN},-\\mathrm{NH}_2,-\\mathrm{NHR},-\\mathrm{OCH}_3$"}, {"identifier": "B", "content": "$-\\mathrm{CN},-\\mathrm{CHO},-\\mathrm{NHCOCH}_3,-\\mathrm{COOR}$"}, {"identifier": "C", "content": "$-\\mathrm{NO}_2,-\\mathrm{NH}_2,-\\mathrm{COOH},-\\mathrm{COOR} $"}, {"identifier": "... | ["D"] | null | The term meta-directing refers to substituents on a benzene ring that direct incoming electrophiles to the meta position (relative to themselves) during an electrophilic aromatic substitution reaction.
<p>Meta directors are typically deactivating groups with respect to the aromatic ring and they often posses an atom w... | mcq | jee-main-2024-online-1st-february-evening-shift | 449 |
lsaosqy9 | chemistry | basics-of-organic-chemistry | electron-displacement-effect | The functional group that shows negative resonance effect is : | [{"identifier": "A", "content": "$-\\mathrm{OH}$"}, {"identifier": "B", "content": "$-\\mathrm{OR}$"}, {"identifier": "C", "content": "$-\\mathrm{COOH}$"}, {"identifier": "D", "content": "$-\\mathrm{NH}_2$"}] | ["C"] | null | <p>The negative resonance effect, also called the -I effect, refers to the ability of a functional group to withdraw electron density through the p-orbitals via resonance. It is often the characteristic of groups that have atoms with high electronegativity or multiple bonds that allow for electron delocalization away f... | mcq | jee-main-2024-online-1st-february-evening-shift | 450 |
lsbmamho | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Ionic reactions with organic compounds proceed through :<br/><br/>
(A) homolytic bond cleavage<br/><br/>
(B) heterolytic bond cleavage<br/><br/>
(C) free radical formation<br/><br/>
(D) primary free radical<br/><br/>
(E) secondary free radical
<br/><br/>
Choose the <b>correct</b> answer from the options given below :
| [{"identifier": "A", "content": "(A) only"}, {"identifier": "B", "content": "(B) only"}, {"identifier": "C", "content": "(C) only"}, {"identifier": "D", "content": "(D) and (E) only"}] | ["B"] | null | <p>The correct answer is <b>Option B</b>: (B) only.</p>
<p>In organic chemistry, ionic reactions typically involve <b>heterolytic bond cleavage</b>. This is when a bond between two atoms breaks and both electrons of the shared pair go to one of the atoms, creating ions. One atom becomes a positively charged ion (catio... | mcq | jee-main-2024-online-1st-february-morning-shift | 451 |
lsbmbcsm | chemistry | basics-of-organic-chemistry | electron-displacement-effect | Which of the following compound will most easily be attacked by an electrophile? | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lsbnxfte/dc7b30fb-b6a5-44bc-b824-5a3ef23b58d7/df99d320-c5a5-11ee-b548-b72f0a3d41f6/file-6y3zli1lsbnxftf.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/6y3zli1lsbnxfte/dc7b30fb-b6a5-44bc-b82... | ["B"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lsbnxbwh/54e21d0d-8e3e-4dde-8bbd-3417cab11fff/dc93e620-c5a5-11ee-b548-b72f0a3d41f6/file-6y3zli1lsbnxbwi.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lsbnxbwh/54e21d0d-8e3e-4dde-8bbd-3417cab11fff/dc93e620-c5a5-11ee-b5... | mcq | jee-main-2024-online-1st-february-morning-shift | 452 |
jaoe38c1lsc6oegr | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>Among the following, total number of meta directing functional groups is (Integer based)</p>
<p>$$-\mathrm{OCH}_3,-\mathrm{NO}_2,-\mathrm{CN},-\mathrm{CH}_3-\mathrm{NHCOCH}_3, -\mathrm{COR},-\mathrm{OH},-\mathrm{COOH},-\mathrm{Cl}$$</p> | [] | null | 4 | <p>Here's how to identify the meta-directing functional groups and determine the total :</p>
<strong>Meta-Directing Groups:</strong>
<br/><br/><ul>
<li>Meta-directing groups are electron-withdrawing. They destabilize the intermediate carbocation that forms during electrophilic aromatic substitution at the ortho and p... | integer | jee-main-2024-online-27th-january-morning-shift | 454 |
jaoe38c1lsd94eth | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>The correct order of reactivity in electrophilic substitution reaction of the following compounds is :</p>
<p><img src="data:image/png;base64,UklGRuARAABXRUJQVlA4INQRAAAQ5wCdASoAA6YBP4G61WU2LiunIjN6EsAwCWlu/ELXgE7v6B4T6vp/0ZNMu719X4e/qDO/2b/lnGqw6fRH/vh89N2mb+wUcLMj//+pX7/FpQUC2L6uKFq26MWQtHxe1bhX54n+hHRMtf+YgIfUhDm... | [{"identifier": "A", "content": "B > C > A > D"}, {"identifier": "B", "content": "B > A > C > D"}, {"identifier": "C", "content": "D > C > B > A"}, {"identifier": "D", "content": "A > B > C > D"}] | ["B"] | null | <p>$$-\mathrm{CH}_3$$ shows $$+\mathrm{M}$$ and $$+\mathrm{I}$$.</p>
<p>$$-\mathrm{Cl}$$ shows $$+\mathrm{M}$$ and $$-\mathrm{I}$$ but inductive effect dominates.</p>
<p>$$-\mathrm{NO}_2$$ shows $$-\mathrm{M}$$ and $$-\mathrm{I}$$.</p>
<p>Electrophilic substitution $$\alpha \frac{1}{-\mathrm{M} \text { and }-\mathrm{I}... | mcq | jee-main-2024-online-31st-january-evening-shift | 455 |
luxweqym | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>The correct stability order of the following resonance structures of $$\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO}$$ is</p>
<p><img src="data:image/png;base64,UklGRi4PAABXRUJQVlA4ICIPAAAQUQCdASoAA2YAPm00lkikIqIhJBT50IANiWlu/FNZFr0HZ1xfpZ/XPQ54D/fvEHys+iM4LKf146l/y77r/lP7r6A95/w91BfyH+Y/5TfA9i/zvoC+q30r/e/3fxi... | [{"identifier": "A", "content": "$$\\text { II }>\\text { III }>\\text { I }$$"}, {"identifier": "B", "content": "$$\\text { II }>\\text { I }>\\text { III }$$"}, {"identifier": "C", "content": "$$\\text { III }>\\text { II }>\\text { I }$$"}, {"identifier": "D", "content": "$$\\text { I }>\\text { II }>\\text { III }$... | ["C"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lw2wk1b4/904e15a3-9cc1-42bd-817f-3f6c93b23684/6cb55a00-1005-11ef-ba2d-25861a7d63e0/file-1lw2wk1b5.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lw2wk1b4/904e15a3-9cc1-42bd-817f-3f6c93b23684/6cb55a00-1005-11ef-ba2d-25861a7d63e0... | mcq | jee-main-2024-online-9th-april-evening-shift | 457 |
luz2v45v | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects?</p>
<p><img src="data:image/png;base64,UklGRqQNAABXRUJQVlA4IJgNAADwmQCdASoAAzwBP4HA2mO2MS0mpDOpgsAwCWlu4WoykmNwud53/XLvO/GzdY8Ffz/aeTtdj/y1+8/XM3JkAf3s9FuV707em2tIf/3gf/n+MJtvcz3hdKA8APSOl9IJIvSMFFRfB/kGQg... | [] | null | 4 | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/jaoe38c1lw3wjqf6/1944b75f-c9eb-4dde-87b0-f9b5cf6dd2e2/2cf29620-1092-11ef-847b-13e3383dad9a/file-jaoe38c1lw3wjqf7.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/jaoe38c1lw3wjqf6/1944b75f-c9eb-4dde-87b0-f9b5cf6dd2e2/2cf29620-1092-1... | integer | jee-main-2024-online-9th-april-morning-shift | 458 |
lv0vyqqy | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p>Which among the following is incorrect statement?</p> | [{"identifier": "A", "content": "The electromeric effect is, temporary effect\n"}, {"identifier": "B", "content": "Hydrogen ion $$(\\mathrm{H}^{+})$$ shows negative electromeric effect\n"}, {"identifier": "C", "content": "The organic compound shows electromeric effect in the presence of the reagent only.\n"}, {"identif... | ["B"] | null | <p>Let's analyze each statement to determine which is incorrect:</p>
<p>Option A: The electromeric effect is a temporary effect.</p>
<p>This statement is correct. The electromeric effect is indeed a temporary effect that occurs in the presence of a reagent and disappears when the reagent is removed.</p>
<p>Option B:... | mcq | jee-main-2024-online-4th-april-morning-shift | 460 |
lvb2acsx | chemistry | basics-of-organic-chemistry | electron-displacement-effect | <p><img src="data:image/png;base64,UklGRm4WAABXRUJQVlA4IGIWAABwdgCdASoAA6kAPm02l0ekIyIhKDRpoIANiWlu8oHdzeXGtSB4Tvfjn+5dt3+o6SH2DKCuT/lX3v/c/2n2ufxver84tQL8j/mv+C+1P1NdiCAH86/tP/I/s/j4/y/oj/T+oB+ZPHJUB/0D6tf+B46/rP2C/1w/5fYDKXKojktOibZ6YbpN28sPs0wJxIl6e+VqUiXp75Gc6eq1TTQr/48RWZyT1W/ZfIs1jEWS6XK6quNeg5LcG9NnQvu8+dW3TumCY... | [{"identifier": "A", "content": "$$\\text { (III) }>\\text { (IV) }>\\text { (II) }>\\text { (I) }$$"}, {"identifier": "B", "content": "$$\\text { (III) }>\\text { (I) }>\\text { (II) }>\\text { (IV) }$$"}, {"identifier": "C", "content": "$$\\text { (II) }>\\text { (IV) }>\\text { (III) }>\\text { (I) }$$"}, {"identifi... | ["B"] | null | <p>Methoxy group strongly activates benzene ring towards electrophilic aromatic substitution due to $$+\mathrm{R}$$ effect. Methyl group weakly activates benzene ring due to its $$+\mathrm{I}$$ and $$+\mathrm{H}$$ effects. $$\mathrm{CF}_3$$ group strongly deactivates the benzene ring due to $$-\mathrm{I}$$ and $$-\math... | mcq | jee-main-2024-online-6th-april-evening-shift | 461 |
LiuGQ4K21myohbLd | chemistry | basics-of-organic-chemistry | isomerism | Following types of compounds (as $$I, II$$ )
<br/><br/><img src="data:image/png;base64,UklGRvIIAABXRUJQVlA4IOYIAACQagCdASoAAxoBP4G412a2LSqnoZDIysAwCWlu4XShG/Pz81f6PrUZIly3+s9cHZbviNxcGL/ANar7QYqTxgTtmQisC1+QFVF2zIRWBa/ICqi7ZkIrAshYOfiuVBayvbxc6ZZXpCzHOGMlkh+HNXz3epYOnYDOvTgA3ezOwOIIUaacAl0U903Db/xHV1XUKlXp4f9jFmiTv/YdG... | [{"identifier": "A", "content": "chain isomerism "}, {"identifier": "B", "content": "position isomerism"}, {"identifier": "C", "content": "conformers "}, {"identifier": "D", "content": "stereoisomerism "}] | ["D"] | null | <b>TIPS/Formulae :</b>
<br><br>Stereoisomerism is of two types $$i.e.,$$ geometrical isomerism and optical isomerism
<br><br>Both the structures shows sterioisomerism. Structure $$I$$ shows geometrical isomerism as it contains two different atoms $$(H)$$ and groups $$\left( {C{H_3}} \right)$$ attached to each carbon c... | mcq | aieee-2002 | 462 |
i6gxw6BpFeG6N8Pi | chemistry | basics-of-organic-chemistry | isomerism | A similarity between optical and geometrical isomerism is that | [{"identifier": "A", "content": "each forms equal number of isomers for a given compound"}, {"identifier": "B", "content": "if in a compound one is present then so is the other"}, {"identifier": "C", "content": "both are included in stereoisomerism"}, {"identifier": "D", "content": "they have no similarity"}] | ["C"] | null | Stereoisomerism involve those isomers which contain same ligands in their co-ordination spheres but differ in the arrangement of those ligands in space. Stereo-isomerism is of two type geometrical isomerism ligands occupy different positions around the central metal atom or ion.
<br><br><b>NOTE :</b> In optical isome... | mcq | aieee-2002 | 463 |
Sox4Ulfi8dSjN3z3 | chemistry | basics-of-organic-chemistry | isomerism | Racemic mixture is formed by mixing two | [{"identifier": "A", "content": "isomeric compounds"}, {"identifier": "B", "content": "enantiomers with chiral compounds"}, {"identifier": "C", "content": "meso compounds"}, {"identifier": "D", "content": "optical isomers"}] | ["B"] | null | A mixture of equal amount of two enantiomers is called a racemic mixture. A racemic mixture does not rotate plane polarized light. They are optically inactive because for every molecule in a racemic mixture that rotate plane of polarized light in one direction, there is a mirror image molecule that rotates the plane in... | mcq | aieee-2002 | 464 |
PlmdyG2bKwMy7oRx | chemistry | basics-of-organic-chemistry | isomerism | Which of the following does not show geometrical isomerism? | [{"identifier": "A", "content": "1,2-dichloro-1-pentene"}, {"identifier": "B", "content": "1,3-dichloro-2-pentene"}, {"identifier": "C", "content": "1,1-dichloro-1-pentene"}, {"identifier": "D", "content": "1,4-dichloro-2-pentene"}] | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264482/exam_images/kbpfmgrkswu8afqudzkw.webp" loading="lazy" alt="AIEEE 2002 Chemistry - Basics of Organic Chemistry Question 235 English Explanation">
<br><br>does not show geometrical isomerism due to presence of two similar $$Cl... | mcq | aieee-2002 | 465 |
Sa7GhXIlheTWb9S3 | chemistry | basics-of-organic-chemistry | isomerism | The general formula C<sub>n</sub>H<sub>2n</sub>O<sub>2</sub> could be for open chain | [{"identifier": "A", "content": "carboxylic acids"}, {"identifier": "B", "content": "diols"}, {"identifier": "C", "content": "dialdehydes"}, {"identifier": "D", "content": "deketones"}] | ["A"] | null | $${C_n}{H_{2n}}{O_2}$$ is general formula for carboxylic acid | mcq | aieee-2003 | 466 |
izv8S3XrstKy7Chw | chemistry | basics-of-organic-chemistry | isomerism | Which of the following compound is not chiral? | [{"identifier": "A", "content": "1- chloropentane"}, {"identifier": "B", "content": "3-chloro-2- methyl pentane "}, {"identifier": "C", "content": "1-chloro -2- methyl pentane "}, {"identifier": "D", "content": "2- chloropentane "}] | ["A"] | null | $$1$$ - chloropentane is not chiral while others are chiral in nature
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265374/exam_images/estv96et7jkxgzlabjg7.webp" loading="lazy" alt="AIEEE 2004 Chemistry - Basics of Organic Chemistry Question 227 English Explanation"> | mcq | aieee-2004 | 468 |
2vfKz2d2qvwpkUJ0 | chemistry | basics-of-organic-chemistry | isomerism | Amongst the following compounds, the optically active alkane having lowest molecular mass is | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266312/exam_images/f3xqnruj7adzye6qutdo.webp\" loading=\"lazy\" alt=\"AIEEE 2004 Chemistry - Basics of Organic Chemistry Question 204 English Option 1\"> "}, {"identifier": "B", "content": "<img c... | ["A"] | null | Only $$2$$- cylcopropyl butane has a chiral centre.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263902/exam_images/msnwcrmmiwmwzt3uqbx6.webp" loading="lazy" alt="AIEEE 2004 Chemistry - Basics of Organic Chemistry Question 204 English Explanation"> | mcq | aieee-2004 | 469 |
BZezXmoSqycP9JyI | chemistry | basics-of-organic-chemistry | isomerism | Which of the following will have meso-isomer also? | [{"identifier": "A", "content": "2- chlorobutane"}, {"identifier": "B", "content": "2- hydroxyopanoic acid"}, {"identifier": "C", "content": "2,3 \u2013 dichloropentane"}, {"identifier": "D", "content": "2-3- dichlorobutane"}] | ["D"] | null | <b>NOTE :</b> The compounds containing two similar assymmetric $$C$$-atoms have plane of symmetry and exist in Meso form.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266308/exam_images/rehnw0mbigaeya9npeyx.webp" loading="lazy" alt="AIEEE 2004 Chemistry - Basics of Or... | mcq | aieee-2004 | 470 |
qPbuje4HOcvnmhYR | chemistry | basics-of-organic-chemistry | isomerism | Increasing order of stability among the three main conformations (i.e. Eclipse, Anti, Gauche) of
2-fluoroethanol is | [{"identifier": "A", "content": "Eclipse, Gauche, Anti"}, {"identifier": "B", "content": "Gauche, Eclipse, Anti "}, {"identifier": "C", "content": "Eclipse, Anti, Gauche "}, {"identifier": "D", "content": "Anti, Gauche, Eclipse "}] | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266504/exam_images/cyhtesbaj1ghqthks6u7.webp" loading="lazy" alt="AIEEE 2006 Chemistry - Basics of Organic Chemistry Question 223 English Explanation">
<br><br>Due to hydrogen bonding between $$H$$ & $$F$$ gauche conformation i... | mcq | aieee-2006 | 471 |
2AvgjiLDbwYJY8Ei | chemistry | basics-of-organic-chemistry | isomerism | Which of the following molecules is expected to rotate the plane of plane - polarized light? | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734267178/exam_images/ylg7yzhycjd9emkgfsbv.webp\" loading=\"lazy\" alt=\"AIEEE 2007 Chemistry - Basics of Organic Chemistry Question 193 English Option 1\"> "}, {"identifier": "B", "content": "<img c... | ["B"] | null | <b>NOTE :</b> The organic compounds which have chiral carbon atom (a carbon atom attached to four different group or atoms) and do not have plane of symmetry rotate plane polarized light.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264654/exam_images/xeylyoeqirub3brz... | mcq | aieee-2007 | 472 |
lljkZljWFfVyi6yR | chemistry | basics-of-organic-chemistry | isomerism | Which one of the following conformation of cyclohexane is chiral? | [{"identifier": "A", "content": "Twist boat "}, {"identifier": "B", "content": "Rigid "}, {"identifier": "C", "content": "Chair "}, {"identifier": "D", "content": "Boat"}] | ["A"] | null | Chiral conformation will not have plane of symmetry. Since twist boat does not have plane of symmetry it is chiral.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264880/exam_images/rg5wihfh7usu8uccxarv.webp" loading="lazy" alt="AIEEE 2007 Chemistry - Basics of Organic ... | mcq | aieee-2007 | 473 |
FFwa7gHtZB2tDSYD | chemistry | basics-of-organic-chemistry | isomerism | The absolute configuration of
<br/><br/><img src="data:image/png;base64,UklGRvgLAABXRUJQVlA4IOwLAABQiwCdASoAA0wBP4HA12Y2L6wnIXPpOsAwCWlu4XNBG/Pb8z/8L1ZeR38HJvW7uz3EtP+vIeE2nanlO15Dfzvl7XLv+4s75e1y7/uLO+Xtcu/7izvlQ4iIm008W3pUZ54ytPeYPxTINRDizvl7XLv+4bt5q6yjn2l5zxfmEda1jmlR+imPpwurtrCCcXaX7loF8Q6xa0fjt2N5MgB5B8TRzltF6qP... | [{"identifier": "A", "content": "$$S,S$$ "}, {"identifier": "B", "content": "$$R,R$$ "}, {"identifier": "C", "content": "$$R,S$$ "}, {"identifier": "D", "content": "$$S,R$$ "}] | ["B"] | null | The absolute configuration is $$(R,R)$$
<br><br>(using priority rules to get the absolute configuration )
<br><br>So the correct answer is $$(b)$$ | mcq | aieee-2008 | 474 |
LFOgm6Efj1n4Epk5 | chemistry | basics-of-organic-chemistry | isomerism | The number of stereoisomers possible for a compound of the molecular formula
CH<sub>3</sub> - CH = CH - CH(OH) - Me is : | [{"identifier": "A", "content": "2"}, {"identifier": "B", "content": "4"}, {"identifier": "C", "content": "6"}, {"identifier": "D", "content": "3"}] | ["B"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264105/exam_images/gr3jbpolfbd3hepyqtfw.webp" loading="lazy" alt="AIEEE 2009 Chemistry - Basics of Organic Chemistry Question 216 English Explanation">
<br><br>exhibits both geometrical as well as optical isomerism.
<br><br>$$cis... | mcq | aieee-2009 | 475 |
7XBcGDXQs3SxDCoz | chemistry | basics-of-organic-chemistry | isomerism | The alkene that exhibits geometrical isomerism is : | [{"identifier": "A", "content": "propene"}, {"identifier": "B", "content": "2-methyl propene "}, {"identifier": "C", "content": "2-butene"}, {"identifier": "D", "content": "2- methyl -2- butene "}] | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264137/exam_images/pn5mxvuxzd5ffxzwnnbu.webp" loading="lazy" alt="AIEEE 2009 Chemistry - Basics of Organic Chemistry Question 217 English Explanation"> | mcq | aieee-2009 | 476 |
qPh4MSXo9J5fvwWF | chemistry | basics-of-organic-chemistry | isomerism | Out of the following, the alkene that exhibits optical isomerism is | [{"identifier": "A", "content": "3\u2013methyl\u20132\u2013pentene "}, {"identifier": "B", "content": "4\u2013methyl\u20131\u2013pentene"}, {"identifier": "C", "content": "3\u2013methyl\u20131\u2013pentene"}, {"identifier": "D", "content": "2\u2013methyl\u20132\u2013pentene"}] | ["C"] | null | For a compound to show optical isomerism, presence of chiral carbon atom is a necessary condition.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267586/exam_images/ocgn4pkjmqz9op5xfmhb.webp" loading="lazy" alt="AIEEE 2010 Chemistry - Basics of Organic Chemistry Questio... | mcq | aieee-2010 | 477 |
gph8uwPqaolDmbPq | chemistry | basics-of-organic-chemistry | isomerism | Identify the compound that exhibits tautomerism. | [{"identifier": "A", "content": "Lactic acid"}, {"identifier": "B", "content": "2-Pentanone"}, {"identifier": "C", "content": "Pheno"}, {"identifier": "D", "content": "2- Butene "}] | ["B"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266621/exam_images/p3ladswjzswvvkc62pcm.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264835/exam_images/j0e5ffnz2kxetknmjtrr.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | aieee-2011 | 478 |
RR1LJVrcIoDjJ04y | chemistry | basics-of-organic-chemistry | isomerism | Which of the following compounds will exhibit geometrical isomerism? | [{"identifier": "A", "content": "3-Phenyl-1-butene"}, {"identifier": "B", "content": "2-Phenyl-1-butene"}, {"identifier": "C", "content": "1,1-Diphenyl-1-propane"}, {"identifier": "D", "content": "1-Phenyl-2-butene"}] | ["D"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266566/exam_images/bp404nuitudj69idc1it.webp" loading="lazy" alt="JEE Main 2015 (Offline) Chemistry - Basics of Organic Chemistry Question 211 English Explanation">
<br><br>$$1$$- Phenyl- $$2$$ -butene the two groups around each of... | mcq | jee-main-2015-offline | 479 |
4O5EqX9OULcXNHbn | chemistry | basics-of-organic-chemistry | isomerism | The absolute configuration of
<br/><br/><img src="data:image/png;base64,UklGRvoOAABXRUJQVlA4IO4OAAAw/ACdASqDAgADP4HA22W2L62nIVEZasAwCWlu49ZLIiISJou5+2/pruvWOWDP6bc7fST5mzHTf/oSf/1tP//+wgqZtmASTGlUWzAJJjSqLZgEkxpU/r3DA5JVsTyub34PiaAafV4qdC+3L/0n2hWqzNkADzDgeeMvQo1nn0YbEbtVIcw7sIQOUC7hgckq2J5XECJmh1yB5MmkKR3/ZGo/IKBkw0Z... | [{"identifier": "A", "content": "$$(2S, 3S)$$ "}, {"identifier": "B", "content": "$$(2R, 3R)$$ "}, {"identifier": "C", "content": "$$(2R, 3S)$$ "}, {"identifier": "D", "content": "$$(2S, 3R)$$ "}] | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7ze473j/eb252a7f-cfea-4ac7-b2e1-c1e2ba3a89b1/c4de17f0-32f1-11ed-8cf6-c1445513adbd/file-1l7ze473k.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7ze473j/eb252a7f-cfea-4ac7-b2e1-c1e2ba3a89b1/c4de17f0-32f1-11ed-8cf6-c1445513adbd/fi... | mcq | jee-main-2016-offline | 480 |
G8mFcjuM63HmXOKr8xzyt | chemistry | basics-of-organic-chemistry | isomerism | In the following structure, the double bonds are marked as I, II, III and IV
<br/><br/><img src="data:image/png;base64,UklGRogMAABXRUJQVlA4IHwMAADwjACdASoAA14BP4HA1mY2L6wpobHZKsAwCWlu4WxhG/Pt80f5PuK/0mRB+o60OfTsv4AX4v/H/1K4S8Af3z9QCcN/G0bGb2ec/+/OsS/a5d/3FnfKKXuLO+UUvcWd8ope4s73eKsc0ptzBkup9455p0pvNzpwC8RuYMl1PvKsc0ptz... | [{"identifier": "A", "content": "III"}, {"identifier": "B", "content": "I"}, {"identifier": "C", "content": "I and III"}, {"identifier": "D", "content": "III and IV"}] | ["B"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264977/exam_images/nwlz6sleqbykbeyc0t9f.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Basics of Organic Chemistry Question 183 English Explanation"... | mcq | jee-main-2017-online-9th-april-morning-slot | 481 |
wpRnpNfDL5pMDeE5Av3rsa0w2w9jx0xrtwu | chemistry | basics-of-organic-chemistry | isomerism | Which of these factors does not govern the stability of a conformation in acyclic compounds? | [{"identifier": "A", "content": "Angle strain"}, {"identifier": "B", "content": "Torsional strain"}, {"identifier": "C", "content": "Electrostatic forces of interaction"}, {"identifier": "D", "content": "Steric interactions"}] | ["A"] | null | Angle strain is not present in acyclic
compounds. | mcq | jee-main-2019-online-10th-april-evening-slot | 482 |
82B2YVVzXIqaGg6TZgjgy2xukfouh81z | chemistry | basics-of-organic-chemistry | isomerism | Among the following compounds, geometrical isomerism is exhibited by : | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266240/exam_images/eyec51ohtvxtaqgoi5vy.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Basics of Organic C... | null | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263619/exam_images/g7mb3pi5fyhfho3ibzna.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265655/exam_images/yfb1griwxqwlkbu3nzlb.webp" style="max-width: 100%;height: auto;display: block;margi... | mcqm | jee-main-2020-online-5th-september-evening-slot | 483 |
9n4izDnmpKulq847jOjgy2xukewfq87a | chemistry | basics-of-organic-chemistry | isomerism | The number of chiral carbons present in the
molecule given below is _____ .
<img src="data:image/png;base64,UklGRhwVAABXRUJQVlA4IBAVAABwdgCdASrvARsBPm0ylkkkIqKhItH5sIANiWlu/HyZVOtQyf0d/j35BeZL9g/tP5M+JT5n+zf2L9nf7J69P8T/M/4t1yP9x/D+7H93/h/8+/6v+B+b35X/vP4n/Y/9V5t/Ar+0/lXsKemf6h/Gv5h/iv7x+53th/Qr+Zd9JXD/ZfxD+Z+4R7qfMv81... | [] | null | 5 | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266228/exam_images/chknc1dtpl0qxov6uxvi.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 152 English Explanatio... | integer | jee-main-2020-online-2nd-september-morning-slot | 485 |
1krrh6zso | chemistry | basics-of-organic-chemistry | isomerism | Which one of the following pairs of isomers is an example of metamerism? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734264828/exam_images/jghcdfnlwqlauaubnjid.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2021 (Online) 20th July Evening Shift Chemistry - Basics of Organic Chem... | ["D"] | null | <p>Metamers are compounds which have different alkyl groups
present along both side of polyvalent functional group.</p>
<p>No polyvalent functional group in option (a).</p>
<p>The two functional groups are different in option (b).</p>
<p>Alcohol is not a polyvalent functional group.</p>
<p>Alkyl groups are different al... | mcq | jee-main-2021-online-20th-july-evening-shift | 487 |
1krt6ll97 | chemistry | basics-of-organic-chemistry | isomerism | The number of acyclic structural isomers (including geometrical isomers) for pentene are ___________ | [] | null | 6 | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264327/exam_images/tlfedyqaxik9ql1kvdos.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265211/exam_images/ajiqgenllxrsxepithox.webp"><source media="(max-wid... | integer | jee-main-2021-online-22th-july-evening-shift | 489 |
1krz1egjv | chemistry | basics-of-organic-chemistry | isomerism | Staggered and eclipsed conformers of ethane are : | [{"identifier": "A", "content": "Polymers"}, {"identifier": "B", "content": "Rotamers"}, {"identifier": "C", "content": "Enantiomers"}, {"identifier": "D", "content": "Mirror images"}] | ["B"] | null | Staggered and eclipsed conformers of ethane also known as rotamers. | mcq | jee-main-2021-online-27th-july-morning-shift | 491 |
1ks1k2edi | chemistry | basics-of-organic-chemistry | isomerism | The dihedral angle in staggered form of Newman projection of 1, 1, 1-Trichloro ethane is ___________ degree. (Round off to the nearest integer) | [] | null | 60 | 1, 1, 1-Trichloro ethane [CCl<sub>3</sub>-CH<sub>3</sub>]<br><br><picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264126/exam_images/jxsdbc3y4e3e1ey8wvkw.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v17342637... | integer | jee-main-2021-online-27th-july-evening-shift | 492 |
1ktid64jm | chemistry | basics-of-organic-chemistry | isomerism | Choose the correct name for compound given below :<br/><br/><img src="data:image/png;base64,UklGRpwDAABXRUJQVlA4IJADAABQHQCdASpGAWoAPm02mEikIqKhInLpmIANiWlu4WuxG+xm/mcz29kn6J3gyoCSj3oZgUkj/SeAMUc/wP49/Q/Sb8tf6j+NfAX+mX/D/i/9L94D1u+ib+oAwGv2QeR7pb5Oh9kHklCpd84qQLDWC9eWohl+QPsg8koVLvnFSA7Nzu0p7V4faEnuy4iURsUZxaQxP4JZVS/Z... | [{"identifier": "A", "content": "(4E)-5-Bromo-hex-4-en-2-yne"}, {"identifier": "B", "content": "(2E)-2-Bromo-hex-4-yn-2-ene"}, {"identifier": "C", "content": "(2E)-2-Bromo-hex-2-en-4-yne"}, {"identifier": "D", "content": "(4E)-5-Bromo-hex-2-en-4-yne"}] | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267331/exam_images/yltn0xoa2neajd6fdgtq.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 31st August Morning Shift Chemistry - Basics of Organic Chemistry Question 116 English Explanation... | mcq | jee-main-2021-online-31st-august-morning-shift | 494 |
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