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Assertion : Bromination of phenol take...

Assertion : Bromination of phenol takes place even in the absence of Lewis acid.
Reason : In phenol, OH group attached to benzene ring has highly deactivating effect.

Text Solution

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The correct Answer is:
C

Halogenation of benzene takes place in the presence of Lewis acid such as `FeBr^3` which polarises the halogen molecule. In case of phenol, thepolarisation of bromine molecule takes place even in the absence of Lewis acid. It is due to the highly activating effect of OH group attached to the benzene ring.
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Knowledge Check

  • Assertion: Dipolemoment ofphenol is smaller than that of methanol. Reason: In phenol C-O bond is less polar due to electron withdrawing effect of the benzene ring whereas in methanol, C-O bond Is more polar due to electron releasing effect of CH_3 group.

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