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|---|---|---|---|---|---|---|---|---|---|---|---|
Qr5SrWsLd7DpZ1kbDrhtZ | chemistry | environmental-chemistry | water-pollution | Water samples with BOD values of 4 ppm and 18 ppm, respectively are : | [{"identifier": "A", "content": "Clean and Highly polluted"}, {"identifier": "B", "content": "Highly polluted and Clean "}, {"identifier": "C", "content": "Highly polluted and Highly polluted "}, {"identifier": "D", "content": "Clean and Clean \n"}] | ["A"] | null | Clean water would have BOD value of less than 5 ppm whereas highly polluted water could have a
BOD value of 17 ppm or more. | mcq | jee-main-2019-online-12th-january-morning-slot | 2,210 |
AozPF8ZSoswuudQlJSMNk | chemistry | environmental-chemistry | water-pollution | The maximum prescribed concentration of
copper in drinking water is : | [{"identifier": "A", "content": "3 ppm"}, {"identifier": "B", "content": "5 ppm"}, {"identifier": "C", "content": "0.5 ppm"}, {"identifier": "D", "content": "0.05 ppm"}] | ["A"] | null | Maximum prescribed concentration of Cu in
drinking water is 3 ppm. | mcq | jee-main-2019-online-8th-april-evening-slot | 2,211 |
Q1Y6jD3B7vnXND9zEC7k9k2k5lkyppv | chemistry | environmental-chemistry | water-pollution | Biochemical Oxygen Demand (BOD) is the
amount of oxygen required (in ppm) : | [{"identifier": "A", "content": "for sustaining life in a water body."}, {"identifier": "B", "content": "by anaerobic bacteria to breakdown\ninorganic waste present in a water body."}, {"identifier": "C", "content": "for the photochemical breakdown of waste\npresent in 1 m<sup>3</sup> volume of a water body."}, {"ident... | ["D"] | null | Biochemical oxygen demand (BOD) is amount
of oxygen required by bacteria to break down
organic waste in a certain volume of water
sample. | mcq | jee-main-2020-online-9th-january-evening-slot | 2,212 |
RJWVxmhQZc4lge6b0d1klrtvfmr | chemistry | environmental-chemistry | water-pollution | Given below are two statements :<br/><br/>Statement I : The value of the parameter "Biochemical Oxygen Demand (BOD)" is important for survival of aquatic life.<br/><br/>Statement II : The optimum value of BOD is 6.5 ppm.<br/><br/>In the light of the above statements, choose the most appropriate answer from the options ... | [{"identifier": "A", "content": "Statement I is false but Statement II is true"}, {"identifier": "B", "content": "Statement I is true but Statement II is false"}, {"identifier": "C", "content": "Both Statement I and Statement II are true"}, {"identifier": "D", "content": "Both Statement I and Statement II are false"}] | ["B"] | null | <p>Clean water would have BOD value of less than 5 ppm whereas highly polluted water could have a BOD value of 17 ppm or more.</p>
<p>Hence, the value of parameter ‘BOD’ is important for survival of aquatic life but optimum value of BOD is 17 ppm or more. So, statement II is incorrect.</p> | mcq | jee-main-2021-online-24th-february-evening-slot | 2,214 |
kwxRPiWONUdpfoDiLf1kmkiv11z | chemistry | environmental-chemistry | water-pollution | Which of the following statement(s) is (are) incorrect reason for eutrophication?<br/><br/>(A) excess usage of fertilisers<br/><br/>(B) excess usage of detergents<br/><br/>(C) dense plant population in water bodies<br/><br/>(D) lack of nutrients in water bodies that prevent plant growth<br/><br/>Choose the most appropr... | [{"identifier": "A", "content": "(A) Only"}, {"identifier": "B", "content": "(B) and (D) only"}, {"identifier": "C", "content": "(C) only"}, {"identifier": "D", "content": "(D) only"}] | ["D"] | null | Nutrient enriched water bodies support dense
plant populations. This is because of the excess
usage of fertilizers and detergents. This process is
known as eutrophication. | mcq | jee-main-2021-online-17th-march-evening-shift | 2,215 |
1krz0lrqx | chemistry | environmental-chemistry | water-pollution | Which one of the following statements is NOT correct? | [{"identifier": "A", "content": "Eutrophication indicates that water body is polluted"}, {"identifier": "B", "content": "The dissolved oxygen concentration below 6 ppm inhibits fish growth"}, {"identifier": "C", "content": "Eutrophication leads to increase in the oxygen level in water"}, {"identifier": "D", "content": ... | ["C"] | null | Eutrophication leads to decrease in oxygen level of water. <br><br>3<sup>rd</sup> statement is incorrect. | mcq | jee-main-2021-online-27th-july-morning-shift | 2,216 |
1ktb4hx27 | chemistry | environmental-chemistry | water-pollution | The conversion of hydroxyapatite occurs due to presence of F<sup>$$-$$</sup> ions in water. The correct formula of hydroxyapatite is : | [{"identifier": "A", "content": "[3Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> . Ca(OH)<sub>2</sub>]"}, {"identifier": "B", "content": "[3Ca(OH)<sub>2</sub> . CaF<sub>2</sub>]"}, {"identifier": "C", "content": "[Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> . CaF<sub>2</sub>]"}, {"identifier": "D", "content": "[3Ca<sub>3</... | ["A"] | null | The F<sup>$$\Theta $$</sup> ions make the enamel on teeth much harder by converting hydroxyapatite, [3Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>] . Ca(OH)<sub>2</sub>], the enamel on the surface of the teeth into much harder fluroappatite. [3Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> . CaF<sub>2</sub>] | mcq | jee-main-2021-online-26th-august-morning-shift | 2,217 |
1ktif4n8z | chemistry | environmental-chemistry | water-pollution | BOD values (in ppm) for clean water (A) and polluted water (B) are expected respectively : | [{"identifier": "A", "content": "A > 50, B < 27"}, {"identifier": "B", "content": "A > 25, B < 17"}, {"identifier": "C", "content": "A < 5, B > 17"}, {"identifier": "D", "content": "A > 15, B > 47"}] | ["C"] | null | BOD values of clean water (A) is less than 5 ppm <br><br>So, A < 5<br><br>BOD values of polluted water (B) is greater than 17 ppm<br><br>So, B > 17<br><br>So, Ans. is (c) | mcq | jee-main-2021-online-31st-august-morning-shift | 2,218 |
1ktn009m1 | chemistry | environmental-chemistry | water-pollution | Water sample is called cleanest on the basis of which one of the BOD values given below : | [{"identifier": "A", "content": "11 ppm"}, {"identifier": "B", "content": "15 ppm"}, {"identifier": "C", "content": "3 ppm"}, {"identifier": "D", "content": "21 ppm"}] | ["C"] | null | BOD is the biological oxygen demand. Cleanest water sample
will have BOD value equal to 3 ppm as clean water could
have BOD value of less than 5 ppm whereas highly polluted water could have BOD value of 17 ppm or more. | mcq | jee-main-2021-online-1st-september-evening-shift | 2,219 |
1l58jlm5s | chemistry | environmental-chemistry | water-pollution | <p>The measured BOD values for four different water samples (A-D) are as follows: A = 3 ppm; B = 18 ppm; C = 21 ppm; D = 4 ppm. The water samples which can be called as highly polluted with organic wastes, are :</p> | [{"identifier": "A", "content": "A and B"}, {"identifier": "B", "content": "A and D"}, {"identifier": "C", "content": "B and C"}, {"identifier": "D", "content": "B and D"}] | ["C"] | null | Highly polluted water should have BOD value of 17
ppm or more | mcq | jee-main-2022-online-26th-june-evening-shift | 2,220 |
1l59r386l | chemistry | environmental-chemistry | water-pollution | <p>Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R.</p>
<p>Assertion A : Polluted water may have a value of BOD of the order of 17 ppm.</p>
<p>Reason R : BOD is a measure of oxygen required to oxidise both the bio-degradable an non-biodegradable organic material in ... | [{"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... | ["C"] | null | Highly polluted water could have a BOD value of 17
ppm or more.<br/><br/>
The amount of oxygen required by bacteria to break
down the organic matter present in a certain volume
of a sample of water is called Biochemical Oxygen
demand (BOD).<br/><br/>
Hence A is correct but R is not correct. | mcq | jee-main-2022-online-25th-june-evening-shift | 2,221 |
1l5am0ld2 | chemistry | environmental-chemistry | water-pollution | <p>The eutrophication of water body results in :</p> | [{"identifier": "A", "content": "loss of Biodiversity."}, {"identifier": "B", "content": "breakdown of organic matter."}, {"identifier": "C", "content": "increase in biodiversity."}, {"identifier": "D", "content": "decrease in BOD."}] | ["A"] | null | Eutrophication is the process in which nutrient
enriched water bodies support a dense plant
population, which kills animal life by depriving it of
oxygen and results in subsequent loss of
biodiversity. | mcq | jee-main-2022-online-25th-june-morning-shift | 2,222 |
1l6jlo7ik | chemistry | environmental-chemistry | water-pollution | <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:solid;b... | [{"identifier": "A", "content": "A-IV, B-I, C-II, D-III"}, {"identifier": "B", "content": "A-III, B-I, C-IV, D-II"}, {"identifier": "C", "content": "A-II, B-IV, C-I, D-III"}, {"identifier": "D", "content": "A-II, B-IV, C-III, D-I"}] | ["B"] | null | A. Sulphate (>500 ppm) - Causes Laxative effect
that leads to dehydration<br/><br/>
B. Nitrate (>50 ppm) - Causes
Methemoglobinemia, skin appears blue<br/><br/>
C. Lead (> 50 ppb) – It damage kidney and RBC<br/><br/>
D. Fluoride (>2 ppm) – It Causes Brown mottling
of teeth | mcq | jee-main-2022-online-27th-july-morning-shift | 2,223 |
1l6mczllm | chemistry | environmental-chemistry | water-pollution | <p>Given below are two statements:</p>
<p>Statement I : In polluted water values of both dissolved oxygen and $$\mathrm{BOD}$$ are very low.</p>
<p>Statement II : Eutrophication results in decrease in the amount of dissolved oxygen.</p>
<p>In the light of the above statements, choose the most appropriate answer from th... | [{"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"}] | ["D"] | null | Since eutrophication is result of excessive growth
of weed in water bodies, which consume dissolved
oxygen of water bodies.<br/><br/>
$\therefore$ Eutrophication decreases amount of dissolved
oxygen in water bodies.<br/><br/>
Polluted water has low value of dissolved oxygen,
but high valueof BOD (Biological oxygen
dem... | mcq | jee-main-2022-online-28th-july-morning-shift | 2,224 |
1ldsd8lk5 | chemistry | environmental-chemistry | water-pollution | <p>The concentration of dissolved Oxygen in water for growth of fish should be more than $$\mathrm{\underline X }$$ ppm and Biochemical Oxygen Demand in clean water should be less than $$\mathrm{\underline Y }$$ ppm. X and Y in ppm are, respectively.</p> | [{"identifier": "A", "content": "<style type=\"text/css\">\n.tg {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid... | ["D"] | null | <p>For high growth, dissolved oxygen should be less than 6 ppm and clean water has dissolved oxygen less than 5 ppm.</p> | mcq | jee-main-2023-online-29th-january-evening-shift | 2,226 |
1lh02vu8k | chemistry | environmental-chemistry | water-pollution | <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:solid;b... | [{"identifier": "A", "content": "A-IV, B-III, C-II, D-I"}, {"identifier": "B", "content": "A-I, B-II, C-III, D-IV"}, {"identifier": "C", "content": "A-II, B-I, C-III, D-IV"}, {"identifier": "D", "content": "A-III, B-IV C-I, D-II"}] | ["D"] | null | <ol>
<li><p>Fluoride ($F^-$) : High concentration of fluoride can lead to a condition known as fluorosis, affecting teeth and bones. Hence, the WHO sets the upper limit for fluoride in drinking water to be 1.5 ppm. This can be approximated to less than 2 ppm. Therefore, $F^-$ (List I: A) corresponds to < 2 ppm (List... | mcq | jee-main-2023-online-8th-april-morning-shift | 2,228 |
1ktcno560 | chemistry | gaseous-state | critical-phenomenon-and-liquefaction | The interaction energy of London forces between two particles is proportional to r<sup>x</sup>, where r is the distance between the particles. The value of x is : | [{"identifier": "A", "content": "3"}, {"identifier": "B", "content": "$$-$$3"}, {"identifier": "C", "content": "$$-$$6"}, {"identifier": "D", "content": "6"}] | ["C"] | null | For London dispersion forces.<br><br>$$E \propto {1 \over {{r^6}}}$$<br><br>Hence, x = $$-$$6 | mcq | jee-main-2021-online-26th-august-evening-shift | 2,229 |
1ldwvmku1 | chemistry | gaseous-state | critical-phenomenon-and-liquefaction | <p>The number of statement/s, which are correct with respect to the compression of carbon dioxide from point (a) in the Andrews isotherm from the following is ___________</p>
<p><img src="data:image/png;base64,UklGRrARAABXRUJQVlA4IKQRAABw/wCdASoAAzwCP4HA2GS2MCynIlG5osAwCWlu//+99E/Qb5Xxu9bl7MRyLh3cr/N8dBE2+Hx/+ez/7Wz///... | [] | null | 2 | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1le5fqd44/b9d0e44c-f994-480c-b540-2e1f252efd03/169d7a40-ad0e-11ed-a86d-8dfe0389db88/file-1le5fqd45.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1le5fqd44/b9d0e44c-f994-480c-b540-2e1f252efd03/169d7a40-ad0e-11ed-a86d-8dfe0389db88... | integer | jee-main-2023-online-24th-january-evening-shift | 2,230 |
DMBvher3DUF68WQz | chemistry | gaseous-state | dalton's-law-of-partial-pressure | Equal masses of methane and oxygen are mixed in an empty container at 25<sup>o</sup>C. The fraction of the
total pressure exerted by oxygen is | [{"identifier": "A", "content": "2/3"}, {"identifier": "B", "content": "1/2"}, {"identifier": "C", "content": "1/3 $$\\times$$ 273/298"}, {"identifier": "D", "content": "1/3"}] | ["D"] | null | Let the mass of methane and oxygen $$=m$$ $$gm.$$
<br><br>Mole fraction of $${O_2}$$
<br><br>$$ = {{Moles\,\,of\,\,{O_2}} \over {Moles\,\,of\,\,{O_2}\, + \,Moles\,\,of\,\,C{H_4}}}$$
<br><br>$$ = {{m/32} \over {m/32 + m/16}}$$
<br><br>$$ = {{m/32} \over {3m/32}} = {1 \over 3}$$
<br><br>Partial pressure of $${O_2}$$
<br>... | mcq | aieee-2007 | 2,231 |
77nv9vOPrUaHclITGgjgy2xukf3isiq9 | chemistry | gaseous-state | dalton's-law-of-partial-pressure | A mixture of one mole each of H<sub>2</sub>
, He and O<sub>2</sub>
each are enclosed in a cylinder of volume V at
temperature T. If the partial pressure of H<sub>2</sub>
is 2 atm, the total pressure of the gases in the
cylinder is : | [{"identifier": "A", "content": "14 atm"}, {"identifier": "B", "content": "38 atm"}, {"identifier": "C", "content": "6 atm"}, {"identifier": "D", "content": "22 atm"}] | ["C"] | null | According to Dalton’s law of partial pressure, p<sub>i</sub>
= x<sub>i</sub>
× P<sub>T</sub>
<br><br>p<sub>i</sub>
= partial pressure of the ith component
<br><br>x<sub>i</sub>
= mole fraction of the ith component
<br><br>p<sub>T</sub> = total pressure of mixture
<br><br>$$ \Rightarrow $$ 2 atm = $$\left( {{{{n_{{H... | mcq | jee-main-2020-online-3rd-september-evening-slot | 2,232 |
1l6gs3unr | chemistry | gaseous-state | dalton's-law-of-partial-pressure | <p>A mixture of hydrogen and oxygen contains $$40 \%$$ hydrogen by mass when the pressure is $$2.2$$ bar. The partial pressure of hydrogen is bar. (Nearest Integer)</p> | [] | null | 2 | $$40 \% \,\mathrm{w} / \mathrm{w}$$ hydrogen gas is given in mixture of $$\mathrm{H}_{2}$$ and oxygen.
<br/><br/>
Wt. of $$\mathrm{H}_{2}=40 \mathrm{~g}$$
<br/><br/>
Wt. of $$\mathrm{O}_{2}=60 \mathrm{~g}$$
<br/><br/>
$$\chi_{\mathrm{H}_{2}}=\frac{\mathrm{n}_{\mathrm{H}_{2}}}{\mathrm{n}_{\mathrm{H}_{2}}+\mathrm{n}_{\ma... | integer | jee-main-2022-online-26th-july-morning-shift | 2,233 |
1ldppkyem | chemistry | gaseous-state | dalton's-law-of-partial-pressure | <p>The total pressure of a mixture of non-reacting gases $$\mathrm{X}(0.6 \mathrm{~g})$$ and $$\mathrm{Y}(0.45 \mathrm{~g})$$ in a vessel is $$740 \mathrm{~mm}$$ of $$\mathrm{Hg}$$.<br/><br/> The partial pressure of the gas $$\mathrm{X}$$ is _______ $$\mathrm{mm}$$ of $$\mathrm{Hg}$$. (Nearest Integer)</p>
<p>(Given : ... | [] | null | 555 | $$
\begin{aligned}
& P_{\text {Total }}=740 \mathrm{~mm} \text { of } \mathrm{Hg} \\\\
& \mathrm{P}_{\mathrm{X}}= (\text { mole fraction of } X) \mathrm{P}_{\text {Total }} \\\\
& \mathrm{n}_X=\frac{0.6}{20}=0.03 \\\\
& \mathrm{n}_Y=\frac{0.45}{45}=0.01 \\\\
& \text { Mole fraction of } X=\frac{0.03}{0.01+0.03}=\frac{3... | integer | jee-main-2023-online-31st-january-morning-shift | 2,235 |
0eygQEYJZAC0BwVD02jgy2xukfur14nc | chemistry | gaseous-state | gas-laws | A spherical balloon of radius 3 cm containing
helium gas has<br/> a pressure of 48 $$ \times $$ 10<sup>–3</sup> bar. At
the same temperature, the pressure, of a
spherical balloon of radius 12 cm containing
the <br/>same amount of gas will be ________ $$ \times $$ 10<sup>–6</sup>
bar. | [] | null | 750 | For gas when temperature and number of moles are constant then we can apply Boyle's law.
<br><br>According to Boyle's law,
<br><br>P<sub>1</sub>V<sub>1</sub> = P<sub>2</sub>V<sub>2</sub>
<br><br>Given, P<sub>1</sub> = 48 $$ \times $$ 10<sup>–3</sup> bar
<br><br>V<sub>1</sub> = $${{4 \over 3}\pi {{\left( 3 \right)}^3}}$... | integer | jee-main-2020-online-6th-september-morning-slot | 2,237 |
1krxcrvsc | chemistry | gaseous-state | gas-laws | An LPG cylinder contains gas at a pressure of 300 kPa at 27$$^\circ$$. The cylinder can withstand the pressure of 1.2 $$\times$$ 10<sup>6</sup> Pa. The room in which the cylinder is kept catches fire. The minimum temperature at which the bursting of cylinder will take place is __________$$^\circ$$ C. (Nearest integer) | [] | null | 927 | $${{{P_1}} \over {{T_1}}} = {{{P_2}} \over {{T_2}}} \Rightarrow {{300 \times {{10}^3}} \over {300}} = {{1.2 \times {{10}^6}} \over {{T_2}}}$$<br><br>$$ \Rightarrow {T_2} = 1200$$ K<br><br>$$ \Rightarrow $$ $${T_2} = 927^\circ $$ C | integer | jee-main-2021-online-25th-july-evening-shift | 2,239 |
1l56wpfxk | chemistry | gaseous-state | gas-laws | <p>Which amongst the given plots is the correct plot for pressure (p) vs density (d) for an ideal gas?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l58mvksh/49db85cf-769d-41c7-84e3-5a56da4b051e/6f087710-fca2-11ec-af50-7b1dc1e93a30/file-1l58mvksi.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l58mvksh/49db85cf-769d-41c7-84e3-5a56da4b051e/6f0... | ["B"] | null | <p>From ideal gas equation we know,</p>
<p>PV = nRT</p>
<p>$$ \Rightarrow PV = {W \over M}RT$$</p>
<p>$$ \Rightarrow P = {W \over V}\,.\,{{RT} \over M}$$</p>
<p>$$ \Rightarrow P = d\,.\,{{RT} \over M}$$ [$$\because$$ $$d = {W \over V}$$]</p>
<p>For a fixed amount of gas at a fixed temperature, M and T is constant.</p>
... | mcq | jee-main-2022-online-27th-june-evening-shift | 2,241 |
1l6e21fw8 | chemistry | gaseous-state | gas-laws | <p>The pressure of a moist gas at $$27^{\circ} \mathrm{C}$$ is $$4 \mathrm{~atm}$$. The volume of the container is doubled at the same temperature. The new pressure of the moist gas is ________________ $$\times 10^{-1} \mathrm{~atm}$$. (Nearest integer)</p>
<p>(Given : The vapour pressure of water at $$27^{\circ} \math... | [] | null | 22 | <p>To solve this problem, we need to determine the new pressure of the moist gas when the volume of the container is doubled while maintaining the same temperature. First, we need to separate the contributions of the gas and the water vapor to the initial pressure and then apply Boyle's Law for the gas component only. ... | integer | jee-main-2022-online-25th-july-morning-shift | 2,242 |
1lgyhpfzp | chemistry | gaseous-state | gas-laws | <p>At constant temperature, a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is __________ mm Hg. (Nearest integer)</p> | [] | null | 1567 | <p>To find the pressure at which the volume decreases by 40%, we can use Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at constant temperature.</p>
<p>Let's assume the initial volume of the gas is V. According to Boyle's Law:</p>
<p>P₁V₁ = P₂V₂</p>
<p>Where P₁ is... | integer | jee-main-2023-online-10th-april-morning-shift | 2,244 |
bnfpDkJBY2Dw8be5 | chemistry | gaseous-state | ideal-gas-equation | Value of gas constant R is | [{"identifier": "A", "content": "0.082 litre atm"}, {"identifier": "B", "content": "0.987 cal mol<sup>-1</sup> K<sup>-1</sup>"}, {"identifier": "C", "content": "8.3 J mol<sup>-1</sup> K<sup>-1</sup>"}, {"identifier": "D", "content": "83 erg mol<sup>-1</sup> K<sup>-1</sup>"}] | ["C"] | null | Value of gas constant
<br><br>$$\left( R \right) = 0.0821L\,atm\,{K^{ - 1}}\,mo{l^{ - 1}}$$
<br><br>$$ = 8.314 \times {10^7}\,\,ergs\,{K^{ - 1}}\,mo{l^{ - 1}}$$
<br><br>$$ = 8.314J{K^{ - 1}}\,mo{l^{ - 1}}$$
<br><br>$$ = 1.987\,cal\,{K^{ - 1}}\,mo{l^{ - 1}}$$ | mcq | aieee-2002 | 2,245 |
2GzdbgvmtegiLSYz | chemistry | gaseous-state | ideal-gas-equation | For an ideal gas, number of moles per litre in terms of its pressure P, gas constant R and temperature T is | [{"identifier": "A", "content": "PT/R"}, {"identifier": "B", "content": "PRT"}, {"identifier": "C", "content": "P/RT"}, {"identifier": "D", "content": "RT/P"}] | ["C"] | null | $$PV = nRT\,\,$$ (number of moles $$ = n/V$$)
<br><br>$$\therefore$$ $$\,\,\,n/V = P/RT.$$ | mcq | aieee-2002 | 2,246 |
Oq5IzlRFMYv3tMatp6wxD | chemistry | gaseous-state | ideal-gas-equation | At 300 K, the density of a certain gaseous molecule at 2 bar is double to that of
dinitrogen (N<sub>2</sub> ) at 4 bar. The molar mass of gaseous molecule is : | [{"identifier": "A", "content": "28 g mol<sup>$$-$$1</sup>"}, {"identifier": "B", "content": "56 g mol<sup>$$-$$1</sup>"}, {"identifier": "C", "content": "112 g mol<sup>$$-$$1</sup>"}, {"identifier": "D", "content": "224 g mol<sup>$$-$$1</sup>"}] | ["C"] | null | Density = $${{Mass} \over {Volume}}$$
<br><br>PV = RT $$ \Rightarrow $$ V = $${{RT} \over P}$$
<br><br>So, Density(d) = $${{MP} \over {RT}}$$
<br><br>Now, d<sub>1</sub>
= x, P<sub>1</sub>
= 4, M<sub>1</sub>
= 28, d<sub>2</sub>
= 2x, P<sub>2</sub>
= 2, M<sub>2</sub>
= ?
<br><br>$$ \therefore $$ $${{{d_1}} \over {{... | mcq | jee-main-2017-online-9th-april-morning-slot | 2,248 |
2Or9MoZos2yfEuzQOB9Zh | chemistry | gaseous-state | ideal-gas-equation | Assuming ideal gas behaviour, the ratio of density of ammonia to that of hydrogen chloride at same temperature and pressure is : (Atomic wt. of Cl = 35.5 u) | [{"identifier": "A", "content": "1.46"}, {"identifier": "B", "content": "0.46"}, {"identifier": "C", "content": "1.64"}, {"identifier": "D", "content": "0.64"}] | ["B"] | null | We know, PV = nRT
<br><br>n = no. of moles = $${m \over M}$$
<br><br>So, PV = $${m \over M}RT$$
<br><br>$$ \Rightarrow $$$$\,\,\,\,$$ P = $${m \over V} \times {{RT} \over M}$$
<br><br>$$ \Rightarrow $$$$\,\,\,\,$$ P = d $$ \times $$ $${{RT} \over M}$$ [ d = density = $${m \over V}$$ ]
<br><br>at constant t... | mcq | jee-main-2018-online-16th-april-morning-slot | 2,249 |
vE4bST8NYSTze4j45VUIN | chemistry | gaseous-state | ideal-gas-equation | 0.5 moles of gas A and x moles of gas B exert a pressure of 200 Pa in a container of volume 10 m<sup>3</sup> at 1000 K. Given R is the gas constant in JK<sup>$$-$$1</sup>mol<sup>$$-$$1</sup>, x is : | [{"identifier": "A", "content": "$${{2R} \\over {4 + R}}$$"}, {"identifier": "B", "content": "$${{2R} \\over {4 - R}}$$"}, {"identifier": "C", "content": "$${{4 + R} \\over {2R}}$$"}, {"identifier": "D", "content": "$${{4 - R} \\over {2R}}$$"}] | ["D"] | null | We know,
<br><br>PV = nRT
<br><br>Given,
<br><br>P = 200 Pa
<br><br>V = 10 m<sup>3</sup>
<br><br>T = 1000 K
<br><br>n = 0.5 + x
<br><br>$$ \therefore $$ 200 $$ \times $$ 10 = (0.5 + x) R $$ \times $$ 1000
<br><br>$$ \Rightarrow $$ 0.5 + x = $${2 \over R}$$
<br><br>$$ \Rightarrow $$... | mcq | jee-main-2019-online-9th-january-morning-slot | 2,250 |
obgKfnmABUkd5QKyxG7k9k2k5hm806t | chemistry | gaseous-state | ideal-gas-equation | NaClO<sub>3</sub> is used, even in spacecrafts, to produce
O<sub>2</sub>. The daily consumption of pure O<sub>2</sub> by a
person is 492L at 1 atm, 300K. How much
amount of NaClO<sub>3</sub>, in grams, is required to
produce O<sub>2</sub> for the daily consumption of a
person at 1 atm, 300 K?<br/>
NaClO<sub>3</sub>(s) ... | [] | null | 2120TO2140 | NaClO<sub>3</sub>(s) + Fe(s) $$ \to $$ NaCl(s) + FeO(s) + O<sub>2</sub>(g)
<br><br>moles of NaClO<sub>3</sub> = moles of O<sub>2</sub>
<br><br>moles of O<sub>2</sub> = $${{PV} \over {RT}}$$ = $${{1 \times 492} \over {0.082 \times 300}}$$ = 20 mol
<br><br>mass of NaClO<sub>3</sub> = 20 $$ \times $$ 106.5 = 2130 g | integer | jee-main-2020-online-8th-january-evening-slot | 2,252 |
oNkdRndRChfURg7CSP1klrvad0l | chemistry | gaseous-state | ideal-gas-equation | The volume occupied by 4.75 g of acetylene gas at 50$$^\circ$$C and 740 mmHg pressure is __________ L. (Rounded off to the nearest integer)<br/><br/>[Given R = 0.0826 L atm K<sup>$$-$$1</sup> mol<sup>$$-$$1</sup>] | [] | null | 5 | Given, mass of C<sub>2</sub>H<sub>2</sub>(g) = 4.75 g<br/><br/>Molecular weight = 26 g/mol<br/><br/>Temperature = 50 + 273 = 323 K<br/><br/>Pressure = 740 torr/mm of Hg<br/><br/>Pressure = $${{740} \over {760}}$$ atm<br/><br/>R = 0.0821 L atm mol<sup>$$-$$1</sup> K<sup>$$-$$1</sup><br/><br/>Hence, no. of mole n = $${... | integer | jee-main-2021-online-24th-february-evening-slot | 2,254 |
zEtWQdvG7u8GG4ezxT1klue792j | chemistry | gaseous-state | ideal-gas-equation | 3.12 g of oxygen is adsorbed on 1.2 g of platinum metal. The volume of oxygen adsorbed per gram of the adsorbent at 1 atm and 300 K in L is __________.<br/><br/>[R = 0.0821 L atm K<sup>$$-$$1</sup>mol<sup>$$-$$1</sup>] | [] | null | 2 | Moles of O<sub>2</sub> = $${{3.12} \over {32}}$$ = 0.0975
<br><br>Using ideal gas equation : PV = nRT
<br><br>V = $${{0.0975 \times 0.082 \times 300} \over 1}$$ = 2.4 L
<br><br>$$ \therefore $$ Volume of O<sub>2</sub>(g) adsorbed per gram of the
<br><br>adsorbent = $${{2.4} \over {1.2}}$$ = 2 | integer | jee-main-2021-online-26th-february-morning-slot | 2,255 |
hKzKBEIJjV9I29tBw11kmkjetax | chemistry | gaseous-state | ideal-gas-equation | The number of chlorine atoms in 20 mL of chlorine gas at STP is _________ 10<sup>21</sup>. (Round off to the Nearest Integer).<br/><br/>[Assume chlorine is an ideal gas at STP<br/><br/>R = 0.083 L bar mol<sup>$$-$$1</sup> K<sup>$$-$$1</sup>, N<sub>A</sub> = 6.023 $$\times$$ 10<sup>23</sup>] | [] | null | 1 | $$n = {{PV} \over {RT}}$$<br><br>$$ = {{1 \times 20 \times {{10}^{ - 3}}} \over {0.083 \times 273}}$$<br><br>No. of atoms = $$ = {{1 \times 20 \times {{10}^{ - 3}}} \over {0.083 \times 273}} \times 2 \times 6.023 \times {10^{23}}$$<br><br>$$ = 1.06 \times {10^{21}}$$ | integer | jee-main-2021-online-17th-march-evening-shift | 2,257 |
1kruuxjv8 | chemistry | gaseous-state | ideal-gas-equation | A home owner uses 4.00 $$\times$$ 10<sup>3</sup> m<sup>3</sup> of methane (CH<sub>4</sub>) gas, (assume CH<sub>4</sub> is an ideal gas) in a year to heat his home. Under the pressure of 1.0 atm and 300 K, mass of gas used is x $$\times$$ 10<sup>5</sup> g. The value of x is __________. (Nearest integer)<br/><br/>(Given ... | [] | null | 26 | $$n(C{H_4}) = {{PV} \over {RT}}$$<br><br>$$ = {{1 \times 4 \times {{10}^3} \times 1000} \over {0.083 \times 300}}$$<br><br>Weight of CH<sub>4</sub><br><br>$$ = {{40 \times 16 \times {{10}^5}} \over {0.083 \times 300}}$$ gm<br><br>$$ = 25.7 \times {10^5}$$ gm | integer | jee-main-2021-online-25th-july-morning-shift | 2,258 |
1l55nsjga | chemistry | gaseous-state | ideal-gas-equation | <p>100 g of an ideal gas is kept in a cylinder of 416 L volume at 27$$^\circ$$C under 1.5 bar pressure. The molar mass of the gas is __________ g mol<sup>$$-$$1</sup>. (Nearest integer)</p>
<p>(Given : R = 0.083 L bar K<sup>$$-$$1</sup> mol<sup>$$-$$1</sup>)</p> | [] | null | 4 | <p>Given, Mass of ideal gas = 100 gm</p>
<p>Let the molar mass of ideal gas = M</p>
<p>$$\therefore$$ Number of moles of gas (n) = $${{100} \over M}$$</p>
<p>Volume of cylinder (V) = 416 L</p>
<p>Temperature (T) = (27 + 273)K = 300 K</p>
<p>Pressure (P) = 1.5 bar</p>
<p>R = 0.083 L bar K<sup>$$-$$1</sup> mol<sup>$$-$$1... | integer | jee-main-2022-online-28th-june-evening-shift | 2,261 |
1l58dbw4q | chemistry | gaseous-state | ideal-gas-equation | <p>An evacuated glass vessel weighs 40.0 g when empty, 135.0 g when filled with a liquid of density 0.95 g mL<sup>$$-$$1</sup> and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mol<sup>$$-$$1</sup> is :</p>
<p>(Given : R = 0.082 L atm K<sup>$$-$$1</sup> mol<sup>$$-$$1</sup>)<... | [{"identifier": "A", "content": "35"}, {"identifier": "B", "content": "50"}, {"identifier": "C", "content": "75"}, {"identifier": "D", "content": "125"}] | ["D"] | null | <p>Weight of empty glass vessel = 40 gm</p>
<p>Weight of glass vessel filled with liquid = 135 gm</p>
<p>$$\therefore$$ Weight of liquid = 135 $$-$$ 40 = 95 gm</p>
<p>Given density of liquid = 0.95 gm ml<sup>$$-$$1</sup></p>
<p>$$\therefore$$ Volume of liquid $$={{95} \over {0.95}} = 100$$ ml</p>
<p>Weight of glass fil... | mcq | jee-main-2022-online-26th-june-morning-shift | 2,262 |
1l59rggfy | chemistry | gaseous-state | ideal-gas-equation | <p>A rigid nitrogen tank stored inside a laboratory has a pressure of 30 atm at 06:00 am when the temperature is 27$$^\circ$$C. At 03:00 pm, when the temperature is 45$$^\circ$$, the pressure in the tank will be _________ atm. [nearest integer]</p> | [] | null | 32 | <p>A nitrogen tank of fixed volume used where number of moles of nitrogen is fixed.</p>
<p>$$\therefore$$ V = constant</p>
<p>n = constant</p>
<p>R = constant</p>
<p>From ideal gas equation,</p>
<p>PV = nRT</p>
<p>$$\Rightarrow$$ P $$\propto$$ T [As V, n, R = constant]</p>
<p>Here, initially P<sub>1</sub> = 30 atm, T<s... | integer | jee-main-2022-online-25th-june-evening-shift | 2,264 |
1l5bdq3ll | chemistry | gaseous-state | ideal-gas-equation | <p>At 300 K, a sample of 3.0 g of gas A occupies the same volume as 0.2 g of hydrogen at 200 K at the same pressure. The molar mass of gas A is ____________ g mol<sup>$$-$$1</sup>. (nearest integer) Assume that the behaviour of gases as ideal.</p>
<p>(Given : The molar mass of hydrogen (H<sub>2</sub>) gas is 2.0 g mol<... | [] | null | 45 | <p>Both gas A and Hydrogen (H<sub>2</sub>) gas have same volume at same pressure. Let both 's volume is V and pressure P.</p>
<p><b>For gas A :</b></p>
<p>Pressure = P</p>
<p>Temperature (T) = 300 K</p>
<p>Volume = V</p>
<p>Mass = 3 g</p>
<p>Molar mass = M gm/mol</p>
<p>using ideal gas equation,</p>
<p>PV = nRT</p>
<p>... | integer | jee-main-2022-online-24th-june-evening-shift | 2,265 |
1l6f7lv1v | chemistry | gaseous-state | ideal-gas-equation | <p>A sealed flask with a capacity of 2 dm<sup>3</sup> contains 11 g of propane gas. The flask is so weak that it will burst if the pressure becomes 2 MPa. The minimum temperature at which the flask will burst is ___________ $$^\circ$$C. [Nearest integer]</p>
<p>(Given : R = 8.3 J K<sup>$$-$$1</sup> mol<sup>$$-$$1</sup>... | [] | null | 1655 | From ideal gas equation,
<br/><br/>
$\mathrm{PV}=\mathrm{nRT}$
<br/><br/>
$P=2 \times 10^{6} \mathrm{~Pa}$
<br/><br/>
$V=2 \mathrm{dm}^{3}=2 \times 10^{-3} \mathrm{~m}^{3}$
<br/><br/>
$\mathrm{R}=8.3 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
<br/><br/>
$\mathrm{n}=\frac{11}{44} \mathrm{~mol}$
<br/><br/>
$2 \times 10^{6} \ti... | integer | jee-main-2022-online-25th-july-evening-shift | 2,266 |
1l6i602ft | chemistry | gaseous-state | ideal-gas-equation | <p>A $$10 \mathrm{~g}$$ mixture of hydrogen and helium is contained in a vessel of capacity $$0.0125 \mathrm{~m}^{3}$$ at 6 bar and $$27^{\circ} \mathrm{C}$$. The mass of helium in the mixture is ____________ g. (nearest integer)</p>
<p>Given: $$\mathrm{R}=8.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$</p>
<p>(A... | [] | null | 8 | Number of moles of mixture of $\mathrm{H}_{2}$ and $\mathrm{He}$
<br/><br/>
$$
\begin{aligned}
&=\frac{P V}{R T} \\
&=\frac{6 \times 10^{5} \times 0.0125}{8.3 \times 300}=3
\end{aligned}
$$
<br/><br/>
Let the mass of He in $10 \mathrm{~g}$ mixture be $\mathrm{xg}$
<br/><br/>
$\therefore \frac{x}{4}+\frac{10-x}{2}=3$
<b... | integer | jee-main-2022-online-26th-july-evening-shift | 2,267 |
YNM112mAYUdTASsZ | chemistry | gaseous-state | kinetic-theory-of-gases | Kinetic theory of gases proves | [{"identifier": "A", "content": "only Boyle's law"}, {"identifier": "B", "content": "only Charle's law"}, {"identifier": "C", "content": "only Avogadro's law"}, {"identifier": "D", "content": "All of these"}] | ["D"] | null | Kinetic theory of gases proves all the given gas laws. | mcq | aieee-2002 | 2,268 |
o4YK11wxjbidjZOg | chemistry | gaseous-state | kinetic-theory-of-gases | As the temperature is raised from 20°C to 40°C, the average kinetic energy of neon atoms
changes by a factor of which of the following? | [{"identifier": "A", "content": "1/2"}, {"identifier": "B", "content": "2"}, {"identifier": "C", "content": "$$313\\over293$$"}, {"identifier": "D", "content": "$$\\sqrt{313\\over293}$$"}] | ["C"] | null | $${{K.E\,\,of\,\,neon\,\,at\,\,{{40}^ \circ }C} \over {K.E\,\,of\,\,neon\,\,at\,\,{{20}^ \circ }C}}$$
<br><br>$$ = {{{3 \over 2}K \times 313} \over {{3 \over 2}K \times 293}}$$
<br><br>$$ = {{313} \over {293}}$$ | mcq | aieee-2004 | 2,270 |
qWBipVvTpYXIocus9G7k9k2k5epudpm | chemistry | gaseous-state | kinetic-theory-of-gases | Identify the correct labels of A,B and C in the following graph from the options given below :<br/><br/>
<img src="data:image/png;base64,UklGRoQJAABXRUJQVlA4IHgJAACwQACdASplAdQAPm02mEikIyKhIbS5wIANiWlu4XHhG/OH8cf1DtM/qv5P9bz5Y9s/SSZb/vf8X/q/+0+Qf7T/kfCHah/xX8j/rHlz/138R/rngDgC+mv+h/pv9h/YT0Iv2/+YeCv/Aehl/rP55/WfSG/QD+N... | [{"identifier": "A", "content": "A - V<sub>av</sub>\n; B - V<sub>rms</sub>\n; C - V<sub>mp</sub>"}, {"identifier": "B", "content": "A - V<sub>rms</sub>\n; B - V<sub>mp</sub>\n; C - V<sub>av</sub>"}, {"identifier": "C", "content": "A - V<sub>mp</sub>; B- V<sub>av</sub>; C - V<sub>rms</sub>\n"}, {"identifier": "D", "cont... | ["C"] | null | $${V_{mp}}\left( {\sqrt {{{2RT} \over M}} } \right) < {V_{av}}\left( {\sqrt {{{8RT} \over {\pi M}}} } \right) < {V_{rms}}\left( {\sqrt {{{3RT} \over M}} } \right)$$ | mcq | jee-main-2020-online-7th-january-evening-slot | 2,271 |
0QEESL1DkNne0soL | chemistry | gaseous-state | maxwell's-distribution-of-speed | Which one of the following statements is NOT true about the effect of an increase in
temperature on the distribution of molecular speeds in a gas? | [{"identifier": "A", "content": "The most probable speed increases"}, {"identifier": "B", "content": "The fraction of the molecules with the most probable speed increases "}, {"identifier": "C", "content": "The distribution becomes broader"}, {"identifier": "D", "content": "The area under the distribution curve remains... | ["B"] | null | Distribution of molecular velocities at two different temperature is given shown below.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265234/exam_images/gr673mpwrt5pv1fpexb0.webp" loading="lazy" alt="AIEEE 2005 Chemistry - Gaseous State Question 59 English Explanation"... | mcq | aieee-2005 | 2,272 |
BIFrcTtTLO9Ostri | chemistry | gaseous-state | maxwell's-distribution-of-speed | For gaseous state, if most probable speed is denoted by C*, average speed by $$\mathop C\limits^{\_\_} $$ and mean square speed by
C, then for a large number of molecules the ratios of these speeds are: | [{"identifier": "A", "content": "C*: $$\\mathop C\\limits^{\\_\\_} $$ : C = 1.128 : 1.225 : 1"}, {"identifier": "B", "content": "C*: $$\\mathop C\\limits^{\\_\\_} $$ : C = 1.225 : 1.128 : 1"}, {"identifier": "C", "content": "C*: $$\\mathop C\\limits^{\\_\\_} $$ : C = 1 : 1.225 : 1.128"}, {"identifier": "D", "conten... | ["D"] | null | Most probable speed $$\left( {{C^ * }} \right) = \sqrt {{{2RT} \over M}} $$
<br><br>Average Speed $$\left( {\overline C } \right) = \sqrt {{{8RT} \over {\pi M}}} $$
<br><br>Root mean square velocity $$\left( c \right) = \sqrt {{{3RT} \over M}} $$
<br><br>$${C^ * }:\overline C :C = \sqrt {{{2RT} \over M}} :\sqrt {{{8RT}... | mcq | jee-main-2013-offline | 2,273 |
vW9BYxGKlCEp6GVvZH3rsa0w2w9jx0vhh6x | chemistry | gaseous-state | maxwell's-distribution-of-speed | Points I, II and III in the following plot respectively correspond to <br/>(V<sub>mp</sub> : most probable velocity)
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264330/exam_images/x6zpofgcmcylh5q2pyqe.webp"/><img src="data:image/png;base64,UklGRugUAABXRUJQV... | [{"identifier": "A", "content": "V<sub>mp</sub> of O<sub>2</sub> (400 K); V<sub>mp</sub> of N<sub>2</sub> (300 K); V<sub>mp</sub> of H<sub>2</sub> (300 K)"}, {"identifier": "B", "content": "V<sub>mp</sub> of N<sub>2</sub> (300 K); V<sub>mp</sub> of H<sub>2</sub> (300 K); V<sub>mp</sub> of O<sub>2</sub> (400 K)"}, {"ide... | ["D"] | null | According to the graph,
<br><br>V<sub>I</sub> < V<sub>II</sub> < V<sub>III</sub>
<br><br>We know,
<br><br>V<sub>mp</sub> = $$\sqrt {{{2RT} \over M}} $$
<br><br>V<sub>mp</sub> (H<sub>2</sub> at 300 K) = $$\sqrt {{{2 \times R \times 300} \over 2}} $$ = $$\sqrt {300R} $$
<br><br>V<sub>mp</sub> (O<sub>2</sub> at 400 ... | mcq | jee-main-2019-online-10th-april-evening-slot | 2,275 |
1lgrlgfz4 | chemistry | gaseous-state | maxwell's-distribution-of-speed | <p>At $$600 \mathrm{~K}$$, the root mean square (rms) speed of gas $$\mathrm{X}$$ (molar mass $$=40$$ ) is equal to the most probable speed of gas $$\mathrm{Y}$$ at $$90 \mathrm{~K}$$. The molar mass of the gas $$\mathrm{Y}$$ is ___________ $$\mathrm{g} ~\mathrm{mol}^{-1}$$. (Nearest integer)</p> | [] | null | 4 | <p>The root mean square speed ($v_{rms}$) of a gas can be calculated using the following formula:</p>
<p>$v_{rms} = \sqrt{\frac{3kT}{M}}$</p>
<p>where:</p>
<ul>
<li>$k$ is Boltzmann's constant ($1.38 \times 10^{-23}$ J/K),</li>
<li>$T$ is the temperature in Kelvin,</li>
<li>$M$ is the molar mass of the gas in kilog... | integer | jee-main-2023-online-12th-april-morning-shift | 2,276 |
x7HuWP5747KtQSI1 | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | In Van der Waals equation of state of the gas law, the constant ‘b’ is a measure of | [{"identifier": "A", "content": "intermolecular repulsions"}, {"identifier": "B", "content": "intermolecular collisions per unit volume "}, {"identifier": "C", "content": "Volume occupied by the molecules "}, {"identifier": "D", "content": "intermolecular attraction"}] | ["C"] | null | In van der Waals equation $$'b'$$ is for volume correction. | mcq | aieee-2004 | 2,277 |
gFsQR0V4Jf56mxih | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | 'a’ and `b’ are van der Waals’ constants for gases. Chlorine is more easily liquefied than ethane because | [{"identifier": "A", "content": "a and b for Cl<sub>2</sub> < a and b for C<sub>2</sub>H<sub>6</sub>"}, {"identifier": "B", "content": "a and b for Cl<sub>2</sub> > a and b for C<sub>2</sub>H<sub>6</sub>"}, {"identifier": "C", "content": "a for Cl<sub>2</sub> > a for C<sub>2</sub>H<sub>6</sub> and b Cl<sub>2</... | ["C"] | null | The value of $$a$$ is a measure of the magnitude of the attractive forces between the molecules of the gas. Greater the value of $$'a',$$ larger is the attractive inter-molecular force between the gas molecules.
<br><br>The value of $$b$$ related to the effective size of the gas molecules. It is also termed as exclude... | mcq | aieee-2011 | 2,278 |
i4gZ3uMYLOWd4C7v | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | The compressibility factor for a real gas at high pressure is : | [{"identifier": "A", "content": "1 + RT/pb"}, {"identifier": "B", "content": "1"}, {"identifier": "C", "content": "1 + pb/RT"}, {"identifier": "D", "content": "1\u2013pb/RT"}] | ["C"] | null | $$\left( {P + {a \over {{V^2}}}} \right)\left( {V - b} \right) = RT\,\,$$
<br><br>at high pressure $${a \over {{V^2}}}$$ can be neglected
<br><br>$$PV - Pb = RT\,\,\,$$
<br><br>and $$\,\,\,PV = RT + Pb$$
<br><br>$${{PV} \over {RT}} = 1 + {{Pb} \over {RT}}$$
<br><br>$$z = 1 + {{Pb} \over {RT}};Z > 1\,\,\,$$ at high... | mcq | aieee-2012 | 2,279 |
ak8xAvo1s8Cjz97o | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | If Z is a compressibility factor, van der Waals equation at low pressure can be written as: | [{"identifier": "A", "content": "Z = 1 + $$RT \\over Pb$$"}, {"identifier": "B", "content": "Z = 1 - $$a \\over VRT$$"}, {"identifier": "C", "content": "Z = 1 - $$Pb \\over RT$$"}, {"identifier": "D", "content": "Z = 1 + $$Pb \\over RT$$"}] | ["B"] | null | Compressibility factor $$\left( Z \right) = {{PV} \over {RT}}$$
<br><br>(For one mole of real gas)
<br><br>van der Waals equation
<br><br>$$\left( {P + {a \over {{V^2}}}} \right)\left( {V - b} \right) = RT$$
<br><br>At low pressure, volume is very large and hence correction term $$b$$ can be neglected in comparison ... | mcq | jee-main-2014-offline | 2,280 |
G1uCSM7tVjt4z6Pa | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | Two closed bulbs of equal volume $$(V)$$ containing an ideal gas initially at pressure $${p_i}$$ and temperature $${T_1}$$ are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the bulbs is then raised to $${T_2}.$$ The final pressure $${p_f}$$ is :
<br/><br/... | [{"identifier": "A", "content": "$$2{p_i}\\left( {{{{T_2}} \\over {{T_1} + {T_2}}}} \\right)$$ "}, {"identifier": "B", "content": "$$2{p_i}\\left( {{{{T_1}{T_2}} \\over {{T_1} + {T_2}}}} \\right)$$ "}, {"identifier": "C", "content": "$${p_i}\\left( {{{{T_1}{T_2}} \\over {{T_1} + {T_2}}}} \\right)$$ "}, {"identifier": "... | ["A"] | null | For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant. $$i.e$$
<br><br>$$V \propto n$$
<br><br>Hence in the given case.
<br><br>Initial moles and final moles are equal $${\left( {{n_T}} \right)_i} = {\left( {{n_T}} \right)_f}$$... | mcq | jee-main-2016-offline | 2,281 |
qiBbj74PfU5N8QYN4g96q | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | At very high pressures, the compressibility factor of one mole of a gas is given by : | [{"identifier": "A", "content": "$${{pb} \\over {RT}}$$"}, {"identifier": "B", "content": "1 + $${{pb} \\over {RT}}$$"}, {"identifier": "C", "content": "1 $$-$$ $${{pb} \\over {RT}}$$"}, {"identifier": "D", "content": "1 $$-$$ $${b \\over {\\left( {VRT} \\right)}}$$"}] | ["B"] | null | <p>According to van der Waals' equation, for one mole of a gas</p>
<p>$$\left( {p + {a \over {{V^2}}}} \right)(V - b) = RT$$ ...... (1)</p>
<p>At high pressure, $${a \over {{V^2}}}$$ can be neglected</p>
<p>So, $$p + {a \over {{V^2}}} \approx p$$ ...... (2)</p>
<p>From Eqs. (1) and (2), we get</p>
<p>$$p(V - b) = RT$$<... | mcq | jee-main-2016-online-9th-april-morning-slot | 2,282 |
GpGK1lJCWYdi3xb80fgaT | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | Among the following, the incorrect statement is : | [{"identifier": "A", "content": "At low pressure, real gases show ideal behaviour."}, {"identifier": "B", "content": "At very low temperature, real gases show ideal behaviour."}, {"identifier": "C", "content": "At very large volume, real gases show ideal behaviour."}, {"identifier": "D", "content": "At Boyle\u2019s tem... | ["B"] | null | A real gas do not show ideal behaviour at low temperature, high pressure and low volume.
<br><br>So according to the question, at low temperature real gas show ideal behaviour. This statement is wrong. | mcq | jee-main-2017-online-8th-april-morning-slot | 2,283 |
pclPmoSxC8nSmkWpQe3rsa0w2w9jwv9lvk5 | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | Consider the following table :<br/><br/>
<style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;border-color:#9ABAD9;}
.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:#9ABAD9;color:#444;background-co... | [{"identifier": "A", "content": "Gas C will occupy more volume than gas A; gas B will be more compressible than gas D"}, {"identifier": "B", "content": "Gas C will occupy lesser volume than gas A; gas B will be more compressible than gas D"}, {"identifier": "C", "content": "Gas C will occupy lesser volume than gas A; g... | ["A"] | null | van der Walls equation of state is,
<br><br> $$z = 1 + {{Pb} \over {RT}} - {a \over {{V_m}RT}}$$
<br><br>b = intermolecule volume of gases.
<br><br>So when the value of 'b' is higher then the higher value of
‘b’ will occupy higher volume and according to van der Walls equation of state 'z' will be higher hence gas wil... | mcq | jee-main-2019-online-10th-april-morning-slot | 2,285 |
O0U4zebzX3GWOMMTmksyG | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | At a given temperature T, gases Ne, Ar, Xe and
Kr are found to deviate from ideal gas
behaviour. Their equation of state is given as<br/><br/>
$$p = {{RT} \over {V - b}}$$ at T.<br/><br/>
Here, b is the van der Waals constant. Which
gas will exhibit steepest increase in the plot of
Z (compression factor) vs p? | [{"identifier": "A", "content": "Xe"}, {"identifier": "B", "content": "Ne"}, {"identifier": "C", "content": "Ar"}, {"identifier": "D", "content": "Kr"}] | ["A"] | null | Given $$p = {{RT} \over {V - b}}$$
<br><br>$$ \Rightarrow $$ $$p\left( {V - b} \right) = RT$$
<br><br>$$ \Rightarrow $$ $${{pV} \over {RT}} = {{pb} \over {RT}} + {{RT} \over {RT}}$$
<br><br>$$ \Rightarrow $$ Z = $${b \over {RT}}p + 1$$
<br><br>$$ \therefore $$ Slope of Z vs p curve (straight line) = $${b \over {RT}}$$
... | mcq | jee-main-2019-online-9th-april-evening-slot | 2,286 |
fmZb0GPVtnwU2Rul5e1kluekkzq | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | A certain gas obeys P(V<sub>m</sub> $$-$$ b) = RT. The value of $${\left( {{{\partial Z} \over {\partial P}}} \right)_T}$$ is $${{xb} \over {RT}}$$. The value of x is _________. (Integer answer) (Z : compressibility factor) | [] | null | 1 | <p>For 1 mole of a real gas, the van der Waals' equation is,</p>
<p>$$\left( {p + {a \over {V_m^2}}} \right)({V_m} - b) = RT$$</p>
<p>At very high pressure, the equation becomes,</p>
<p>$$p({V_m} - b) = RT$$</p>
<p>$$ \Rightarrow p{V_m} = RT + pb \Rightarrow {{p{V_m}} \over {RT}} = 1 + {{pb} \over {RT}}$$</p>
<p>$$ \Ri... | integer | jee-main-2021-online-26th-february-morning-slot | 2,288 |
1l6kubn6d | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | <p>For a real gas at $$25^{\circ} \mathrm{C}$$ temperature and high pressure (99 bar) the value of compressibility factor is 2, so the value of Vander Waal's constant 'b' should be __________ $$\times 10^{-2} \mathrm{~L} \mathrm{~mol}^{-1}$$ (Nearest integer)</p>
<p>(Given $$\mathrm{R}=0.083 \mathrm{~L}$$ bar $$\mathrm... | [] | null | 25 | For 1 mole at high pressure
<br/><br/>
$P(V-b)=R T$
<br/><br/>
$\mathrm{PV}-\mathrm{Pb}=\mathrm{RT}$
<br/><br/>
$\frac{\mathrm{PV}}{\mathrm{RT}}=1+\frac{\mathrm{Pb}}{\mathrm{RT}}$
<br/><br/>
$Z=1+\frac{\mathrm{Pb}}{\mathrm{RT}}$
<br/><br/>
$1=\frac{99(\mathrm{~b})}{0.083 \times 298}$
<br/><br/>
$b=\frac{0.083 \times 2... | integer | jee-main-2022-online-27th-july-evening-shift | 2,290 |
1ldss5sx2 | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | <p>For 1 mol of gas, the plot of pV vs. p is shown below. p is the pressure and V is the volume of the gas</p>
<p><img src="data:image/png;base64,UklGRiIJAABXRUJQVlA4IBYJAADwmQCdASoAA8UBP4HA2WY2L6ypoNB5GsAwCWlu6gAnz8QPdNHf18/UDfHQEkDxpH9/RtzZONqbU2ptTam1NqbU2ptTam1NqbTQk0FyIBJmDkM4KK5EaDDU2ptTam1NqbU2prsCbJxtTam00JMoXe... | [{"identifier": "A", "content": "$$1+\\frac{b}{V}$$"}, {"identifier": "B", "content": "$$1-\\frac{a}{RTV}$$"}, {"identifier": "C", "content": "$$1+\\frac{a}{RTV}$$"}, {"identifier": "D", "content": "$$1-\\frac{b}{V}$$"}] | ["B"] | null | For 1 mole of real gas
<br/><br/>
$\mathrm{PV}=\mathrm{ZRT}$
<br/><br/>
from graph PV for real gas is less than PV for ideal gas at point $\mathrm{A}$
<br/><br/>
$\mathrm{Z} < 1$
<br/><br/>
$\mathrm{Z}=1-\frac{\mathrm{a}}{\mathrm{V}_{\mathrm{m}} \mathrm{RT}}$ | mcq | jee-main-2023-online-29th-january-morning-shift | 2,291 |
1lgq5bvjl | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | <p>A certain quantity of real gas occupies a volume of $$0.15~ \mathrm{dm}^{3}$$ at $$100 \mathrm{~atm}$$ and $$500 \mathrm{~K}$$ when its compressibility factor is 1.07 . Its volume at 300 atm and $$300 \mathrm{~K}$$ (When its compressibility factor is 1.4 ) is ___________ $$\times 10^{-4} ~\mathrm{dm}^{3}$$ (Nearest ... | [] | null | 392 | $$
\begin{aligned}
& \mathrm{z}=\frac{\mathrm{PV}}{\mathrm{nRT}} ; \mathrm{n}=\frac{\mathrm{PV}}{\mathrm{ZRT}} \\\\
& \mathrm{Z}_1=1.07, \mathrm{P}_1=100 \mathrm{~atm}, \mathrm{~V}_1=0.15 \mathrm{~L}, \mathrm{~T}_1=500 \mathrm{~K} \\\\
& \mathrm{Z}_2=1.4, \mathrm{P}_2=300 \mathrm{~atm}, \mathrm{~T}_2=300 \mathrm{~K}, \... | integer | jee-main-2023-online-13th-april-morning-shift | 2,292 |
1lgyry0ih | chemistry | gaseous-state | real-gas-and-van-der-wall's-equation | <p>Arrange the following gases in increasing order of van der Waals constant 'a'</p>
<p>A. Ar</p>
<p>B. $$\mathrm{CH}_{4}$$</p>
<p>C. $$\mathrm{H}_{2} \mathrm{O}$$</p>
<p>D. $$\mathrm{C}_{6} \mathrm{H}_{6}$$</p>
<p>Choose the correct option from the following.</p> | [{"identifier": "A", "content": "D, C, B and A"}, {"identifier": "B", "content": "A, B, C and D"}, {"identifier": "C", "content": "B, C, D and A"}, {"identifier": "D", "content": "C, D, B and A"}] | ["B"] | null | <p>The van der Waals constant 'a' is a measure of the strength of the intermolecular forces in a gas. Larger molecules and molecules with stronger intermolecular forces will have larger 'a' constants. </p>
<p>Here, we are comparing argon (Ar), methane (CH₄), water (H₂O), and benzene (C₆H₆).</p>
<p>Argon... | mcq | jee-main-2023-online-8th-april-evening-shift | 2,293 |
YhIafiSYsm9Ny31L | chemistry | haloalkanes-and-haloarenes | haloalkanes | The reaction :<br/>
$${(CH)_3}C - Br\buildrel {{H_2}O} \over
\longrightarrow {(CH)_3}C - OH$$ | [{"identifier": "A", "content": "elimination reaction"}, {"identifier": "B", "content": "substitution reaction"}, {"identifier": "C", "content": "free radical reaction"}, {"identifier": "D", "content": "displacement reaction"}] | ["B"] | null | The hydrolysis of $$t$$-butyl bromide is an example of $${S_N}1$$ reaction. The reaction consists of two steps.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265046/exam_images/mejo1efh1azcomtntvov.webp" loading="lazy" alt="AIEEE 2002 Chemistry - Haloalkanes and Haloar... | mcq | aieee-2002 | 2,294 |
GhBslikI5bMiNL8W | chemistry | haloalkanes-and-haloarenes | haloalkanes | Tertiary alkyl halides are practically inert to substitution by S<sub>N</sub>2 mechanism because of | [{"identifier": "A", "content": "insolubility"}, {"identifier": "B", "content": "instability"}, {"identifier": "C", "content": "inductive effect"}, {"identifier": "D", "content": "steric hindrance"}] | ["D"] | null | Due to steric hindrance tertiary alkyl halide do not react by $${S_N}2$$ mechanism they react by $${S_N}1$$ mechanism. $${S_N}2$$ mechanism is followed in case of primary and secondary alkyl halides .
<br><br>The order is
<br><br>$$C{H_2} - X > C{H_3} - C{H_2}X > {\left( {C{H_3}} \right)_2}CH.X > {\left( {C{H... | mcq | aieee-2005 | 2,295 |
QFmlPkcfmI30FWXJ | chemistry | haloalkanes-and-haloarenes | haloalkanes | Alkyl halides react with dialkyl copper reagents to give | [{"identifier": "A", "content": "alkenes"}, {"identifier": "B", "content": "alkyl copper halides"}, {"identifier": "C", "content": "alkanes"}, {"identifier": "D", "content": "alkenyl halides"}] | ["C"] | null | In Corey House synthesis of alkanes alkyl halide react with lithium dialkyl cuprate
<br><br>$$R'X + Li{R_2}Cu\buildrel \, \over
\longrightarrow R' - R + RCu + LiX$$ | mcq | aieee-2005 | 2,296 |
wPDTgc0fl8jSpE8V | chemistry | haloalkanes-and-haloarenes | haloalkanes | Elimination of bromine from 2-bromobutane results in the formation of- | [{"identifier": "A", "content": "equimolar mixture of 1 and 2-butene"}, {"identifier": "B", "content": "predominantly 2-butene"}, {"identifier": "C", "content": "predominantly 1-butene"}, {"identifier": "D", "content": "predominantly 2-butyne "}] | ["B"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263326/exam_images/b46mndbwkemvp0qxoe0j.webp" loading="lazy" alt="AIEEE 2005 Chemistry - Haloalkanes and Haloarenes Question 149 English Explanation">
<br><br>The formation of $$2$$-butene is in accordance to <b>Saytzeff's rule.</... | mcq | aieee-2005 | 2,297 |
fp3riE18xnsMsA7D | chemistry | haloalkanes-and-haloarenes | haloalkanes | Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces | [{"identifier": "A", "content": "4-phenylcyclopentene"}, {"identifier": "B", "content": "2-phenylcyclopentene"}, {"identifier": "C", "content": "1-phenylcyclopentene "}, {"identifier": "D", "content": "3-phenylcyclopentene"}] | ["D"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265168/exam_images/kli6vjueyqvkes247ub4.webp" loading="lazy" alt="AIEEE 2006 Chemistry - Haloalkanes and Haloarenes Question 147 English Explanation">
Hughes and Ingold proposed that bimolecular elimination
reactions take place when... | mcq | aieee-2006 | 2,298 |
c9Iv25t9FOjrqjpk | chemistry | haloalkanes-and-haloarenes | haloalkanes | The structure of the major product formed in the following reaction
<br/><br/><img src="data:image/png;base64,UklGRiQJAABXRUJQVlA4IBgJAACwbwCdASoAAzsBP4HA2WY2MCynIdTYssAwCWlu4XKRG/Pt8x/5juN/2uRcOBdivyUvM+ElAB3oU639sZozzv/wFHWUEAqoAg9YFlBAKqAIPWBZQQCqgCD1gWUEASrL7qudZQPwOwRdR+SjRIoS0glPgwujQh9xIPWBZQQCqgCD1gWUDGby6I8doc... | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263382/exam_images/scmlw5bsltpei5gg4ma0.webp\" loading=\"lazy\" alt=\"AIEEE 2006 Chemistry - Haloalkanes and Haloarenes Question 132 English Option 1\"> "}, {"identifier": "B", "content": "<img cl... | ["B"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264467/exam_images/qv1qktjj7qjwrgyzuo9j.webp" loading="lazy" alt="AIEEE 2006 Chemistry - Haloalkanes and Haloarenes Question 132 English Explanation"> | mcq | aieee-2006 | 2,299 |
nuKrwIrs6tRqH8DK | chemistry | haloalkanes-and-haloarenes | haloalkanes | Which of the following is the correct order of decreasing S<sub>N</sub>2 reactivity? | [{"identifier": "A", "content": "RCH<sub>2</sub>X > R<sub>3</sub>CX > R<sub>2</sub>CHX"}, {"identifier": "B", "content": "RCH<sub>2</sub>X > R<sub>2</sub>CHX > \nR<sub>3</sub>CX"}, {"identifier": "C", "content": "R<sub>3</sub>CX > R<sub>2</sub>CHX > RCH<sub>2</sub>X"}, {"identifier": "D", "content":... | ["B"] | null | In $${S_N}2$$ mechanism transition state is pentavelent. For bulky alkyl group it will have sterical hinderance and smaller alkyl group will favour the $${S_N}2$$ mechanism. So the decreasing order of reactivity of alkyl halides is $$RC{H_2}X > {R_2}CHX > {R_3}CX$$ | mcq | aieee-2007 | 2,300 |
pt0ngDNZPnGnjyIX | chemistry | haloalkanes-and-haloarenes | haloalkanes | Consider the following bromides :
<br/><br/><img src="data:image/png;base64,UklGRrYYAABXRUJQVlA4IKoYAABwcQCdASoAA64APm00l0kkIqIhIhJpoIANiWlu4XU17mNwrL4H/lP469+n9R/KL+veoP4h8k/TvyU/sntL/rXSz/yvob/Dfqt93/pn7d/4r91/ij/XeFvwr1AvxT+Of2/+w/tF/eP3T9uvY8aJ/iv2A9gL16+hf7X++f4v9r/Rt/ufQj7A+wB/QP67/rP7V7ad61+A/3P7KfAD/RP7J/0P8X7... | [{"identifier": "A", "content": "$$B > C > A$$ "}, {"identifier": "B", "content": "$$B > A > C$$ "}, {"identifier": "C", "content": "$$C > B > A$$ "}, {"identifier": "D", "content": "$$A > B > C$$ "}] | ["A"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264450/exam_images/olonuajujqujagdppwvd.webp" loading="lazy" alt="AIEEE 2010 Chemistry - Haloalkanes and Haloarenes Question 131 English Explanation">
<br><br>Since $${S_N}1$$ reactions involve the formation of carbocation as inter... | mcq | aieee-2010 | 2,302 |
VRIH3zWFUwBDFFyq | chemistry | haloalkanes-and-haloarenes | haloalkanes | How many chiral compounds are possible on monochlorination of 2–methyl butane ? | [{"identifier": "A", "content": "8"}, {"identifier": "B", "content": "2"}, {"identifier": "C", "content": "4"}, {"identifier": "D", "content": "6"}] | ["B"] | null | The reaction involved is<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lklvwhnu/89e65c32-e81e-4189-9d09-7ae2f458281f/29b6aca0-2ce3-11ee-b76f-25640016f466/file-6y3zli1lklvwhnv.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/6y3zli1lklvwhnu/89e65c32-e81e-4189-9d09-7... | mcq | aieee-2012 | 2,303 |
CLEGaeUtiH0tymt4 | chemistry | haloalkanes-and-haloarenes | haloalkanes | Compound $$\left( A \right),\,{C_8}{H_9}Br,\,\,\,$$ gives a white precipitate when warmed with alcoholic $$AgN{O_3}.$$ Oxidation of $$(A)$$ gives an acid $$\left( B \right),$$ $${C_8}{H_6}{O_4}.\,\,\left( B \right)$$ easily forms anhydride on heating. Identify the compound $$(A).$$ | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734264048/exam_images/utubp8ihszfnxluirjmr.webp\" loading=\"lazy\" alt=\"JEE Main 2013 (Offline) Chemistry - Haloalkanes and Haloarenes Question 130 English Option 1\"> "}, {"identifier": "B", "conte... | ["D"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263713/exam_images/aoszxghrzhqgbxpxrwrl.webp" loading="lazy" alt="JEE Main 2013 (Offline) Chemistry - Haloalkanes and Haloarenes Question 130 English Explanation"> | mcq | jee-main-2013-offline | 2,304 |
LVPpCWM1PCNSfEFm | chemistry | haloalkanes-and-haloarenes | haloalkanes | In S<sub>N</sub>2 reactions, the correct order of reactivity for the following compounds:<br/>
CH<sub>3</sub>Cl, CH<sub>3</sub>CH
<sub>2</sub>Cl, (CH<sub>3</sub>)<sub>2</sub>CHCl and (CH<sub>3</sub>)<sub>3</sub>CCl is: | [{"identifier": "A", "content": "CH<sub>3</sub>CH<sub>2</sub>Cl > CH<sub>3</sub>Cl > (CH<sub>3</sub>)<sub>2</sub>CHCl > (CH<sub>3</sub>)<sub>3</sub>CCl"}, {"identifier": "B", "content": "(CH<sub>3</sub>)<sub>2</sub>CHCl > CH<sub>3</sub>CH<sub>2</sub>Cl > CH<sub>3</sub>Cl > (CH<sub>3</sub>)<sub>3</sub>... | ["D"] | null | Steric congestion around the carbon atom undergoing the inversion process will slow down the $${S_N}2$$ reaction, hence less congestion faster will the reaction. So, the order is
<br><br>$$C{H_3}Cl > \left( {C{H_3}} \right)C{H_2} - Cl > $$
<br><br>$$\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\left( {C{H_3}} \right)_2}CH - C... | mcq | jee-main-2014-offline | 2,305 |
7dmKpmZoRmckHRGv | chemistry | haloalkanes-and-haloarenes | haloalkanes | The synthesis of alkyl fluorides is best accomplished by: | [{"identifier": "A", "content": "Sandmeyer\u2019s reaction"}, {"identifier": "B", "content": "Finkelstein reaction"}, {"identifier": "C", "content": "Swarts reaction"}, {"identifier": "D", "content": "Free radical fluorination"}] | ["C"] | null | Alkyl fluorides are more conveniently prepared by heating suitable chloro $$-$$ or bromo-alkanes with organic fluorides such as $$As{F_3},\,\,Sb{F_3},\,\,Co{F_2},\,\,AgF,\,H{g_2}{F_2}\,\,$$ etc.
<br><br>This reaction is called <b>Swarts reaction.</b>
<br><br>$$C{H_3}Br + AgF\buildrel \, \over
\longrightarrow C{H_3}... | mcq | jee-main-2015-offline | 2,306 |
AyFEI582LecYVlzPVq7Iu | chemistry | haloalkanes-and-haloarenes | haloalkanes | Bromination of cyclohexene under conditions given below yields :
<br/><br/><img src="data:image/png;base64,UklGRtgHAABXRUJQVlA4IMwHAADwfACdASoAAzIBP4HA3GU2MS2nIlU5CsAwCWlu8p9XuEtDOzr8/avqaeXcCbgD+L33hpgG//TYrGe5z//7/8PFyHFeTqdIsLwL3Be4L3Be4L3Be4L3Be4L2psYDv3ZEV0P/gi9AGfS6G5wzwZ1DyhAS8/A7PzBm2J+B2fmDNsT8Ds/MGdZM1v+QZXbi... | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l82xwubb/d3f78989-4e24-416f-bb0e-e3a4a84ebe83/88dc2f80-34e5-11ed-b84c-a3c7c2456516/file-1l82xwubc.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l82xwubb/d3f78989-4e24-416f-bb0e-e3a4a84ebe83/88d... | ["B"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3y9ztfd/d69a6422-28bf-456b-ac9b-7d9cd5d3b9f6/00637a90-e324-11ec-8ab2-698930c131d9/file-1l3y9ztfe.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l3y9ztfd/d69a6422-28bf-456b-ac9b-7d9cd5d3b9f6/00637a90-e324-11ec-8ab2-698930c131d9/fi... | mcq | jee-main-2016-online-10th-april-morning-slot | 2,308 |
yejzyddwbKAvhXjn | chemistry | haloalkanes-and-haloarenes | haloalkanes | The increasing order of the reactivity of the following halides for the S<sub>N</sub>1 reaction is :<br/><br/>
<img src="data:image/png;base64,UklGRlgOAABXRUJQVlA4IEwOAADwrACdASoAA1ABP4HA2mS2MD+nInKJk/AwCWlu/AkXnszeYmjxTdBw+kP1str9v36PT3f0vhXMLtw+f2ZLf//qA+/BMvLmFggFKUC3h0fuS6IOyfKGhe/fZeUqL8YJAShzdLSGBYzNQotJF11woApmX... | [{"identifier": "A", "content": "(II) < (I) < (III)"}, {"identifier": "B", "content": "(I) < (III) < (II)"}, {"identifier": "C", "content": "(II) < (III) < (I)"}, {"identifier": "D", "content": "(III) < (II) < (I)"}] | ["A"] | null | Since S<sub>N</sub>1 reactions involve the formation of carbocation as intermediate in the rate
determining step, more is the stability of carbocation higher will be the reactivity of alkyl
halides towards S<sub>N</sub>1 reaction.
<br><br><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7yna60d/f82e44e... | mcq | jee-main-2017-offline | 2,309 |
c0z2IJy7oYWhUQH2RCIj5 | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product of the following reaction is :<br/><br/>
<img src="data:image/png;base64,UklGRpAXAABXRUJQVlA4IIQXAADQcgCdASoAA4wAPm0ylkikIqIhI5JqsIANiWlu/Ax/3L9wwTmX8Z5g/rH48+Bv9//tn7U+J36X+7fkr7A2S/rT1OPk33C/Tf372xfxv+Q8D/kp/ieoL+T/zj/Afmp/eOJJtX+tfsBevX0D/Wf378q/TK1LPD/sAd+L4UFAf+e/5X0G/rH0MfV/sI/zz+5f9bsT+jsSmrYl6... | [{"identifier": "A", "content": "CH<sub>2</sub> = CHCH<sub>2</sub>CH = CHCH<sub>3</sub>"}, {"identifier": "B", "content": "CH<sub>2</sub> = CHCH = CHCH<sub>2</sub>CH<sub>3</sub>\n"}, {"identifier": "C", "content": "CH<sub>3</sub>CH = C = CHCH<sub>2</sub>CH<sub>3</sub>"}, {"identifier": "D", "content": "CH<sub>3</sub>CH... | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l83n6unz/18c3b88d-3461-46db-9de2-29ac9c9231da/637394f0-3548-11ed-8c5c-f3f0850e6b94/file-1l83n6uo0.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l83n6unz/18c3b88d-3461-46db-9de2-29ac9c9231da/637394f0-3548-11ed-8c5c-f3f0850e6b94/fi... | mcq | jee-main-2017-online-8th-april-morning-slot | 2,310 |
AJouBkYJ2dnx82bhJ0Bo0 | chemistry | haloalkanes-and-haloarenes | haloalkanes | In the following reaction sequence :
<br/><br/><img src="data:image/png;base64,UklGRnwcAABXRUJQVlA4IHAcAAAQfwCdASoAA6AAPm02l0ikIqIhIxSJkIANiWlu/FuZyOtQv/0u/qH49eCf9F/H7z5/GvnX7h+Tf70+/p/Z+NDoz/Sf1r1T/j/1l+xf2j9sv7v+6/3n/gf794d/Gr+E/LD4BfyP+Vf3D+wfuD/df3Z49vaf8z/svUC9Vvnv+e/vn+R/7n+n9J3+f/tP7j+5f1k/3f9r/Zn6AP4x/Ov8f/bf7... | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734264792/exam_images/qzax2pllvyfjibyiyqbs.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Haloalkanes and Haloa... | ["D"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264991/exam_images/hm2m9xsqdloxa6mfvsft.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2017 (Online) 9th April Morning Slot Chemistry - Haloalkanes and Haloarenes Question 125 English Explanation"> | mcq | jee-main-2017-online-9th-april-morning-slot | 2,311 |
TmfI0PhNN6BR2jN6 | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product obtained in the following reaction is :<br/><br/>
<img src="data:image/png;base64,UklGRmQJAABXRUJQVlA4IFgJAAAweQCdASoAAxUBP4HA2mW2MC0nIdIZSsAwCWlu/Gf4Eb0HZ19/sH+sNubZ+dte+W3KzfXnkmSf/6HLbMAd0+0jBwqec2d+jZPglP5BUWzAHdP2EkFRbMAd044pJVrxuunIcOdUwSKc/hfdPnKv/Dun7CSCotmAO6fsJIKi1V17ReUkqttZ4b4m32ask9e5ld0+... | [{"identifier": "A", "content": "C<sub>6</sub>H<sub>5</sub>CH = CHC<sub>6</sub>H<sub>5</sub>"}, {"identifier": "B", "content": "(+) - C<sub>6</sub>H<sub>5</sub>CH(Ot-Bu)CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>"}, {"identifier": "C", "content": "(-) - C<sub>6</sub>H<sub>5</sub>CH(Ot-Bu)CH<sub>2</sub>C<sub>6</sub>H<sub>5... | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267195/exam_images/piexutsrafcp3ekwzg5j.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2017 (Offline) Chemistry - Haloalkanes and Haloarenes Question 133 English Explanation"> | mcq | jee-main-2017-offline | 2,313 |
ubQhYAu8evYWN8lF | chemistry | haloalkanes-and-haloarenes | haloalkanes | 3-Methyl-pent-2-ene on reaction with HBr in presence of peroxide forms an addition product. The number
of possible stereoisomers for the product is : | [{"identifier": "A", "content": "Zero"}, {"identifier": "B", "content": "Two"}, {"identifier": "C", "content": "Four"}, {"identifier": "D", "content": "Six"}] | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265111/exam_images/gnbzmp19jloc8tqq8zzc.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264656/exam_images/n1gv2buqpx6ms2ej0mop.webp"><source media="(max-wid... | mcq | jee-main-2017-offline | 2,315 |
BroAcoOeGe5LirXVBFsbp | chemistry | haloalkanes-and-haloarenes | haloalkanes | The most polar compound among the following is : | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l8g4jx4w/e54a0a0c-f768-4a30-959a-17f5a30be29c/b1dde800-3c25-11ed-8acd-3bfc6080b9d7/file-1l8g4jx4x.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l8g4jx4w/e54a0a0c-f768-4a30-959a-17f5a30be29c/b1d... | ["A"] | null | Among the given compounds, (A) will be most polar compound. Fluorine is highly electronegative atom, it pulls the electron density towards itself. As both the fluorine atoms are in the same direction, therefore, net dipole moment will increase in that direction which will cause the maximum polarity of the compound. | mcq | jee-main-2018-online-16th-april-morning-slot | 2,316 |
E7c2eAoJg2MEDr12EHxtb | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product of the following reaction is :
<br/><br/><img src="data:image/png;base64,UklGRhIKAABXRUJQVlA4IAYKAAAQogCdASoAA+QBP4G82Ga2LiynoNB42sAwCWlu4XKRG/Pz9T2m9np3C/IWd3u/Rmd1B//erEa5/We27Gio7ErEXdkXH+lb48rzdJGPEaSMeI0kY8RpHXFvMlbSGSdEOC7tWyE0jj6c8YvA8tYx4jSRjxGkjHiNJGPEaSMU16x/LfskoINvAfsV6fIR/aC4/0rfHlebpIx4... | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l8g55dnc/bd4f32a4-7788-4591-834a-9b02c53e45e7/069d3d80-3c28-11ed-8acd-3bfc6080b9d7/file-1l8g55dnd.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l8g55dnc/bd4f32a4-7788-4591-834a-9b02c53e45e7/069... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8g55xht/f7573235-9a72-4969-bf7c-d9fc03688c68/15f1f410-3c28-11ed-8acd-3bfc6080b9d7/file-1l8g55xhu.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l8g55xht/f7573235-9a72-4969-bf7c-d9fc03688c68/15f1f410-3c28-11ed-8acd-3bfc6080b9d7/fi... | mcq | jee-main-2018-online-16th-april-morning-slot | 2,317 |
y2CyZOWPSVjWetQZ | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product of the following reaction is:
<img src="data:image/png;base64,UklGRjIKAABXRUJQVlA4ICYKAACQPgCdASquAZEAPm00l0kkIqIhItLJYIANiWlu/HyYbOtQyf0H/g/ap/W/yX8Rnz79m/JD0j6uP+V7cf3T+M/1j/Vepn+t/mPi/8Af5n+LewF6Y/sH8t/ar0Af4D+AfsB4eNM/8r/APYI7f/5D+R/1D9d/RS/uv5h6n9yj/r/5LyH3hvsB/nb/Z/zf+devl/U/xr+q/tP7Wfl//mfxT+j/... | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734265282/exam_images/cjfsyp1krkx2wzcjhclh.webp\" loading=\"lazy\" alt=\"JEE Main 2018 (Offline) Chemistry - Haloalkanes and Haloarenes Question 136 English Option 1\">"}, {"identifier": "B", "conten... | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265903/exam_images/lvbg7cjwgdvicgcb4etm.webp" loading="lazy" alt="JEE Main 2018 (Offline) Chemistry - Haloalkanes and Haloarenes Question 136 English Explanation">
<br><br>OMe<sup>$$-$$</sup> is a strong base and because of this E<s... | mcq | jee-main-2018-offline | 2,318 |
yJbMVAdqAXHeDT2BqQ3rsa0w2w9jx97q3kk | chemistry | haloalkanes-and-haloarenes | haloalkanes | Which one of the following is likely to give a precipitate with AgNO<sub>3</sub> solution ? | [{"identifier": "A", "content": "CHCl<sub>3</sub>"}, {"identifier": "B", "content": "(CH<sub>3</sub>)<sub>3</sub>CCl"}, {"identifier": "C", "content": "CCl<sub>4</sub>"}, {"identifier": "D", "content": "CH<sub>2</sub>=CH\u2013Cl"}] | ["B"] | null | The molecule which will produce stable carbocation will react with AgNO<sub>3</sub> solution.
<br><br>(CH<sub>3</sub>)<sub>3</sub>CCl $$\buildrel {AgN{O_3}} \over
\longrightarrow $$ (CH<sub>3</sub>)<sub>3</sub>C<sup>+</sup>NO<sub>3</sub><sup>-</sup> + AgCl($$ \downarrow $$) | mcq | jee-main-2019-online-12th-april-evening-slot | 2,319 |
cyMbzZCyT7kgVr333O3rsa0w2w9jx8y6wf4 | chemistry | haloalkanes-and-haloarenes | haloalkanes | Heating of 2-chloro-1-phenylbutane with EtOK/EtOH gives X as the major product. Reaction of X with
Hg(OAc)<sub>2</sub>/H<sub>2</sub>O followed by NaBH<sub>4</sub> gives Y as the major product. Y is : | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263731/exam_images/x2zki4z7jf4efye6e2lt.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2019 (Online) 12th April Evening Slot Chemistry - Haloalkanes and Halo... | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264416/exam_images/ngspxwd9rkfvhzsl1wfo.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2019 (Online) 12th April Evening Slot Chemistry - Haloalkanes and Haloarenes Question 107 English Explanation"... | mcq | jee-main-2019-online-12th-april-evening-slot | 2,320 |
38FxkrwXCFYJmpL3oV3rsa0w2w9jwvhfh6v | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product of the following reaction is :
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263706/exam_images/hyjeeachfwbesl4t5nhw.webp"/><img src="data:image/png;base64,UklGRm4MAABXRUJQVlA4IGIMAAAQXgCdASqoAsgAPm02mEkkIyKhILQJKIANiWlu62AzUM7Ouz9B/5F+LvgV/... | [{"identifier": "A", "content": "<picture><source media=\"(max-width: 320px)\" srcset=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266620/exam_images/qmeiackzoewoouxror56.webp\"><img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263769/exam_images/gsnrwr1im05cnkp86fw9.webp\" style=\"max-width... | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264705/exam_images/mn9ek6ynpzenijrdrnnz.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265483/exam_images/ihzgqwa8baqwuk3b1zny.webp"><img src="https://res.c... | mcq | jee-main-2019-online-10th-april-morning-slot | 2,322 |
YQwyr8rTOVn63putFX3rsa0w2w9jx0wdp3e | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product 'Y' in the following reactions is :
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264287/exam_images/ikyi2v4weqtpbjicusx7.webp"/><img src="data:image/png;base64,UklGRnIKAABXRUJQVlA4IGYKAADwUQCdASqoAr8APm02mUkkIyKhIdPo6IANiWlu/HyZyOtQzv0g/nf... | [{"identifier": "A", "content": "<picture><source media=\"(max-width: 320px)\" srcset=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263596/exam_images/edwi5btvhy6ruzkykdgb.webp\"><img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263673/exam_images/tl0yybzbu1kjsanmoebz.webp\" style=\"max-width... | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264193/exam_images/f2nwm6aehyip7qdoyxyf.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264917/exam_images/uiwvnmfp2s5amacovwlv.webp"><img src="https://res.c... | mcq | jee-main-2019-online-10th-april-evening-slot | 2,323 |
lq85iCEuexDvaQkD2cVT6 | chemistry | haloalkanes-and-haloarenes | haloalkanes | Which one of the following alkenes when
treated with HCl yields majorly an anti
Markovnikov product? | [{"identifier": "A", "content": "Cl \u2013 CH = CH<sub>2</sub>"}, {"identifier": "B", "content": "F<sub>3</sub>C \u2013 CH = CH<sub>2</sub>"}, {"identifier": "C", "content": "CH<sub>3</sub>O \u2013 CH = CH<sub>2</sub>"}, {"identifier": "D", "content": "H<sub>2</sub>N \u2013 CH = CH<sub>2</sub>"}] | ["B"] | null | Markovnikov rule says negative part of the reagent attacks on the carbon of the double bond which have less number of hydrogen atom.
<br><br>So in Anti-Markovnikov rule negative part of the reagent attacks on the carbon of the double bond which have more number of hydrogen atom.
<picture><source media="(max-width: 320p... | mcq | jee-main-2019-online-8th-april-evening-slot | 2,324 |
uj7AMYE68yEWHyFAqeAUh | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product in the following reaction is :
<img src="data:image/png;base64,UklGRgAOAABXRUJQVlA4IPQNAAAwhACdASrsAlwBP4G812Y2LqwnIXKI+sAwCWlu4XVRG/Pb8g/5PwhawHfraD9kvAC9X7u2ADvnJkf30w0Hle89++/+7y/+2KG/qtu4A5uGXuk64dVt3AHNwy90nXDqtu4A5uGW6kP6Z33SqWgre9sBkTLrMApe6Trh1W3cAc3DL3SdcOq27gDij+Q/4Ihy64Y/BG9C8k/hXegInZOKDQB... | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734264508/exam_images/drzxjasuxcq55pw0zsko.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2019 (Online) 8th April Evening Slot Chemistry - Haloalkanes and Haloa... | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267074/exam_images/qrkmuj7ok1uvmti8cffh.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2019 (Online) 8th April Evening Slot Chemistry - Haloalkanes and Haloarenes Question 115 English Explanation">
<... | mcq | jee-main-2019-online-8th-april-evening-slot | 2,325 |
Kn0E6WwaKRgpOEHiAmxxT | chemistry | haloalkanes-and-haloarenes | haloalkanes | Which hydrogen in compound (E) is easily replaceable during bromination reaction in presence of light ?
<br/><br/><img src="data:image/png;base64,UklGRpoNAABXRUJQVlA4II4NAACQWgCdASrfAfgAPm02mUikIyKhIrJ5GIANiWlu4XShG/OH8V/yn8YvBb+zfln4j/o/7n+W+67Zqfsl+L/l/9N/1f9X+hf7T/p/wd8/fcl/VfzL2CPUX+N/kn9e/2XoN/tP6Af4DxPgCfU3/Ffz7+... | [{"identifier": "A", "content": "$$\\beta $$ $$-$$ hydrogen "}, {"identifier": "B", "content": "$$\\alpha $$ $$-$$ hydrogen "}, {"identifier": "C", "content": "$$\\gamma $$ $$-$$ hydrogen "}, {"identifier": "D", "content": "$$\\delta $$ $$-$$ hydrogen "}] | ["C"] | null | Due to greater stability of allyl radical formed after
replacement of $$\gamma $$-hydrogen in compound (E), allylic bromination
can easily be taken place. | mcq | jee-main-2019-online-10th-january-morning-slot | 2,326 |
CIDo9xfVAgZpEMJJ3Ijgy2xukf2c6lux | chemistry | haloalkanes-and-haloarenes | haloalkanes | The mechanism of S<sub>N</sub>1 reaction is given as :
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267720/exam_images/y3xqn455urrdfqjvqsro.webp"/><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264516/exam_i... | [{"identifier": "A", "content": "(a) and (b)"}, {"identifier": "B", "content": "(a), (b) and (c)"}, {"identifier": "C", "content": "(a) and (c)"}, {"identifier": "D", "content": "(b) and (d)"}] | ["B"] | null | S<sub>N</sub>1 favours
<br><br>(a) The reaction is favoured by weak nucleophiles
<br><br>(b) R<sup>+</sup> would be easily formed if the substituents are bulky <br><br>(c) The reaction is accoumpained by racemization | mcq | jee-main-2020-online-3rd-september-morning-slot | 2,328 |
xjMQu00yxLn9KW8Vshjgy2xukg4molw1 | chemistry | haloalkanes-and-haloarenes | haloalkanes | The increasing order of the boiling points of
the major products A, B and C of the following
reactions will be :
<img src="data:image/png;base64,UklGRm4TAABXRUJQVlA4IGITAACQgACdASr0AS4BPm02mEikIyKhIvQJsIANiWlu/HyZNMgDOzru/Rn+YfjD4A/2T+k/tL6E/i/y/9w/rv7M/2T1sP8r+AfzzrHPknuvffv4x/V/9Z/VP3f+8H5l/jf5J/Uv9d/OPTX4dfG3sF+nf7v... | [{"identifier": "A", "content": "A < C < B"}, {"identifier": "B", "content": "C < A < B"}, {"identifier": "C", "content": "B < C < A"}, {"identifier": "D", "content": "A < B < C"}] | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267007/exam_images/vgm4mki2zxvmks8etpwa.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Haloalkanes and Haloarenes Question 89 English Explanation"... | mcq | jee-main-2020-online-6th-september-evening-slot | 2,329 |
ToJZqAKvw1E2kWYbWfjgy2xukfotw2er | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product formed in the following reaction is :
<br/>CH<sub>3</sub>CH = CHCH(CH<sub>3</sub>)<sub>2</sub> $$\buildrel {HBr} \over
\longrightarrow $$ | [{"identifier": "A", "content": "Br(CH<sub>2</sub>)<sub>3</sub>CH(CH<sub>3</sub>)<sub>2</sub>"}, {"identifier": "B", "content": "CH<sub>3</sub>CH(Br)CH<sub>2</sub>CH(CH<sub>3</sub>)<sub>2</sub>"}, {"identifier": "C", "content": "CH<sub>3</sub>CH<sub>2</sub>CH(Br)CH(CH<sub>3</sub>)<sub>2</sub>"}, {"identifier": "D", "co... | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7m685oj/a3733f7a-7c8d-44a8-8017-2a247408f515/b988c130-2bac-11ed-bad3-59534b1d6f8c/file-1l7m685ok.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7m685oj/a3733f7a-7c8d-44a8-8017-2a247408f515/b988c130-2bac-11ed-bad3-59534b1d6f8c/fi... | mcq | jee-main-2020-online-5th-september-evening-slot | 2,330 |
JoPrT1963OSJyrUgDdjgy2xukfcfo0h1 | chemistry | haloalkanes-and-haloarenes | haloalkanes | Which of the following compounds will form the
precipitate with aq. AgNO<sub>3</sub> solution most
readily? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734266746/exam_images/pkqympynstfqh9wjfhk1.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2020 (Online) 4th September Evening Slot Chemistry - Haloalkanes and Hal... | ["B"] | null | Rate of reaction $$ \propto $$ stability of carbocation.
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265476/exam_images/dq7k5xvsef5rqgxbvwpk.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 4th September Evening Slot Chemistry - Ha... | mcq | jee-main-2020-online-4th-september-evening-slot | 2,331 |
2bUcZfoSEZl3hlttTAjgy2xukf7ty2am | chemistry | haloalkanes-and-haloarenes | haloalkanes | The decreasing order of reactivity of the
following organic molecules towards AgNO<sub>3</sub>
solution is :
<img src="data:image/png;base64,UklGRjYRAABXRUJQVlA4ICoRAADQaACdASprATkBPm02mUgkIyKhJPX5KIANiWlu/CX5cetQzP0Y/nX42e7fv++/f2L9puwT8z+3PpkfzH8O/nPWh/3H9D7sf33+M/0n/mf3f53/tv+C/nf4Z+ofxA1C/U390/iv9D/5X9p9R/+R/in9r8B... | [{"identifier": "A", "content": "(B) > (A) > (C) > (D)"}, {"identifier": "B", "content": "(A) > (B) > (C) > (D)"}, {"identifier": "C", "content": "(A) > (B) > (D) > (C)"}, {"identifier": "D", "content": "(C) > (D) > (A) > (B)"}] | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266019/exam_images/tp9hre55vigxmyxmdket.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Haloalkanes and Haloarenes Question 93 English Explanation ... | mcq | jee-main-2020-online-4th-september-morning-slot | 2,333 |
IQJEisrf3zGPdpDkk1jgy2xukf3lihsg | chemistry | haloalkanes-and-haloarenes | haloalkanes | The major product in the following reaction is :
<img src="data:image/png;base64,UklGRvgIAABXRUJQVlA4IOwIAAAwRACdASrrAbUAPm00l0kkIqKhIdDZQIANiWlu4XKRG/Ol8LfzftQ/uv5Sddx4c9jfREqj/QDvvfZ/4p/Qv9f+Wvw7/tP514g+4PUC9Rf1L+EfsJ51f0A/qvgJUn/vHlZ/OP9H/Ef6l/y/e79f/wn8A44n+Mecp/oP0A82GLX/ffxT+q+vx/o/xT+X+nT5i/2H8i/qn7CfKB/tf4l/RP1... | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734265542/exam_images/dzstaxdzshrmufz4auix.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Haloalkanes and Hal... | ["A"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264838/exam_images/gamfskn5sxgvjovrf41j.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264904/exam_images/too7xuqn8itnz7hrimhm.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | jee-main-2020-online-3rd-september-evening-slot | 2,334 |
ihvurbjT88kHKA416Jjgy2xukey69y6l | chemistry | haloalkanes-and-haloarenes | haloalkanes | Consider the reaction sequence given below:
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267103/exam_images/ebklfj4otscmqc1fdp3v.webp"/><img src="data:image/png;base64,UklGRsATAABXRUJQVlA4ILQTAABQogCdASqoAlsBP4HA12W2L6wnINFqEsAwCWlu4XHhG/Pb8sf2vwb/yP+7yDHkbQ... | [{"identifier": "A", "content": "Changing the concentration of base will\nhave no effect on reaction (1)"}, {"identifier": "B", "content": "Changing the concentration of base will\nhave no effect on reaction (2)"}, {"identifier": "C", "content": "Changing the base from OH<sup>-</sup> to <sup>-</sup>OR will\nhave no eff... | ["A"] | null | For reaction 1,
<br>rate = K [t-BuBr] ....(1)
<br><br>for reaction 2,
<br>rate = K[t-BuBr][OH<sup>–</sup>] ...(2)
<br><br>Reaction 1 is independent of concentration of
OH<sup>–</sup> where as reaction 2 is dependent on
concentration of OH<sup>–</sup>
<br><br>Hence changing the concentration of base will
have no effect ... | mcq | jee-main-2020-online-2nd-september-evening-slot | 2,335 |
8fKTg6RVb0rwZw68XOjgy2xukevk0kxk | chemistry | haloalkanes-and-haloarenes | haloalkanes | Which of the following compunds will show
retention in configuration on nucleophilic
substitution by OH<sup>–</sup> ion? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263791/exam_images/q0v9uzql4c4g3xmzxfpi.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Haloalkanes and Hal... | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266531/exam_images/ixdfaf4dom5fsm7armlo.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Haloalkanes and Haloarenes Question 99 English Explanation"... | mcq | jee-main-2020-online-2nd-september-morning-slot | 2,337 |
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