- 1(current)
Q. No.Which aryl halide is most reactive towards aromatic nucleophilic substitution reaction?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Given below are two statements:
| Assertion (A): | It is difficult to replace chlorine by -OH in chlorobenzene in comparison to that in chloroethane. |
| Reason (R): | Chlorine carbon (C—Cl) bond in chlorobenzene has a partial double bond character due to resonance. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
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Which of the following is the halogen exchange reaction?
| 1. | R X + NaI \(\xrightarrow{\text{ Acetone }}\) RI + NaX |
| 2. |  |
| 3. | R - OH + HX \(\xrightarrow{\text{ ZnCl}_2~~}\) R - X + H2O |
| 4. |  |
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The reaction of toluene with chlorine in the presence of iron and in the absence of light produces:
| 1. |  |
| 2. |  |
| 3. |  |
| 4. | Mixture of 2 and 3 |
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Arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution.
1. (i) < (ii) < (iii)
2. (ii) < (i) < (iii)
3. (iii) < (ii) < (i)
4. (i) < (iii) < (ii)
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- 1(current)
Q. No.
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