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Assertion: In monohaloarenes, further el...

Assertion: In monohaloarenes, further electrophilic substitution occurs at ortho and para positions.
Reason : Halogen atom is a ring deactivator.

A

If both (A) and (R) are correct and (R) is the correct explanation of (A).

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
It involves the formation of transitionstate. X is -I showing atom due to which these.deactivate benzene nucleus. However due to their electron donating R effect, these increases electron density atortho and para positions and make them more reactive for electrophilic substitution reaction.
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Knowledge Check

  • Assertion: Anisole undergoes electrophilic substitution at o-and p-positions. Reason: Anisole is less reactive .than phenol towards electrophilic substitution reactions.

    A
    A. Both A and R are correct and R is the correct explanation of A
    B
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    C
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    D
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    B
    If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
    C
    If (A) is correct, but (R) is incorrect.
    D
    If both (A) and (R) are incorrect.

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    B
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    C
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