- 1(current)
Q. No.Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is
1. Electrophilic elimination reaction
2. Electrophilic substitution reaction
3. Free radical addition reaction
4. Nucleophilic substitution reaction
Chlorobenzene is formed by the reaction of chlorine with benzene in the presence of . Which of the following species attacks the benzene ring in this reaction?
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
Arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution reaction:
 |
 |
 |
| (i) | (ii) | (iii) |
1. (i) < (ii) < (iii)
2. (i) < (iii) < (ii)
3. (iii) < (ii) < (i)
4. (ii) < (iii) < (i)
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)
Select the correct option based on statements below:
| Assertion (A): | The presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards nucleophilic substitution. |
| Reason (R): | The nitro group, being an electron-withdrawing group, decreases the electron density over the benzene ring. |
| 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. |
Select the correct option based on statements below:
| Assertion (A): | In monohaloarenes, further electrophilic substitution occurs at ortho and para positions. |
| Reason (R): | The halogen atom is a ring deactivator. |
| 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. |
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. |
Select the correct option based on statements below:
| Assertion (A): | Nitration of chlorobenzene leads to the formation of m-nitrochlorobenzene. |
| Reason (R): | —NO2 group is an m-directing group. |
| 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. |
- 1(current)
Q. No.
© 2024 GoodEd Technologies Pvt. Ltd.