- 1(current)
Q. No.Given below are two statements:
| Assertion (A): | chlorine is an electron-withdrawing group, yet it is ortho-, para- directing in electrophilic aromatic substitution reactions. |
| Reason (R): | 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. |
Subtopic: Haloarenes: Directive Influence of Halogen |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect 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. |
Subtopic: Haloarenes: Directive Influence of Halogen |
To view explanation, please take trial in the course below.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven 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. |
Subtopic: Chemical Properties | Haloarenes: Directive Influence of Halogen |
To view explanation, please take trial in the course below.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect 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. |
Subtopic: Haloarenes: Directive Influence of Halogen |
To view explanation, please take trial in the course below.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect 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. |
Subtopic: Haloarenes: Directive Influence of Halogen |
To view explanation, please take trial in the course below.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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