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Q. No.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below :
| Assertion (A): |  undergoes \(S_N2\) reaction faster than  |
| Reason (R): | Iodine is a better leaving group because of its larger size. |
In the light of the above statements, choose the correct answer from the options given below :
| 1. | (A) is True but (R) is False |
| 2. | (A) is False but (R) is True |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: Mechanism of Reactions |
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Level 2: 60%+
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How many products (including stereoisomers) are expected from monochlorination of the following compound?
1. \(5 \)
2. \(6 \)
3. \(2 \)
4. \(3\)
1. \(5 \)
2. \(6 \)
3. \(2 \)
4. \(3\)
Subtopic: Isomerism & Chirality |
Level 3: 35%-60%
NEET - 2025
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Subtopic: Mechanism of Reactions |
72%
Level 2: 60%+
NEET - 2024
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Subtopic: Chemical Properties |
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Level 2: 60%+
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The products A and B obtained in the following reactions, respectively, are:
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
Subtopic: Chemical Properties |
71%
Level 2: 60%+
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\(\text{CCl}_2\text{F}_2\)is one of the most common haloalkanes used in industries. The reaction through which it is manufactured from tetrachloromethane is called:
1. Finkelstein reaction
2. Sandmeyer's reaction
3. Swarts reaction
4. Wurtz-Fittig reaction
1. Finkelstein reaction
2. Sandmeyer's reaction
3. Swarts reaction
4. Wurtz-Fittig reaction
Subtopic: Chemical Properties |
80%
Level 1: 80%+
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Which of the following is the most preferred method for preparing pure alkyl chlorides from alcohols?
1. \(\mathrm{{R}-{OH}+{HCl} \xrightarrow{{ZnCl}_2} {R}-{Cl}+{H}_2 {O}}\)
2. \(\mathrm{{R}-{OH}+{PCl}_5 → {R}-{Cl}+{POCl}_3+{HCl}}\)
3. \(\mathrm{{R}-{OH}+{SOCl}_2 → {R}-{Cl}+{SO}_2+{HCl}}\)
4. \(\mathrm{{R}-{OH}+{PCl}_3 → {R}-{Cl}+{H}_3 {PO}_3}\)
1. \(\mathrm{{R}-{OH}+{HCl} \xrightarrow{{ZnCl}_2} {R}-{Cl}+{H}_2 {O}}\)
2. \(\mathrm{{R}-{OH}+{PCl}_5 → {R}-{Cl}+{POCl}_3+{HCl}}\)
3. \(\mathrm{{R}-{OH}+{SOCl}_2 → {R}-{Cl}+{SO}_2+{HCl}}\)
4. \(\mathrm{{R}-{OH}+{PCl}_3 → {R}-{Cl}+{H}_3 {PO}_3}\)
Subtopic: Introduction and Physical Properties |
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The major product D formed in the following reaction sequence is:
| 1. |  |
2. |  |
| 3. | \(\mathrm{CH_3CH_2OH}\) | 4. | \(\mathrm{CH_3CH_2Cl}\) |
Subtopic: Chemical Properties |
67%
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The major product C in the below-mentioned reaction is:
| 1. | Propan-1-ol | 2. | Propan-2-ol |
| 3. | Propane | 4. | Propyne |
Subtopic: Mechanism of Reactions |
82%
Level 1: 80%+
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Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 468862
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Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 468862
The following reaction method
is not suitable for the preparation of the corresponding haloarene products, due to the high reactivity of halogen, when X is:
1. F
2. I
3. Cl
4. Br
is not suitable for the preparation of the corresponding haloarene products, due to the high reactivity of halogen, when X is:
1. F
2. I
3. Cl
4. Br
Subtopic: Chemical Properties |
81%
Level 1: 80%+
NEET - 2024
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