Q.

(A) Benzene does not undergo polymerisation.
(R) Benzene loses aromaticity if involved in polymerisation

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a

Both (A) and (R) are true but (R) is not the correct explanation of (A)

b

Both (A) and (R) are true and (R) is the correct explanation of (A)

c

Both (A) and (R) are false

d

(A) is true but (R) is false

answer is A.

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Detailed Solution

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  • Benzene does not undergo polymerization reaction due to the aromaticity of the ring. 
  • The conjugated, cyclic double bond system provides about 36 kcal/mol of stabilization to the molecule. 
  • For addition to occur, it would have to disrupt the aromatic nature of the ring and this is very difficult. 
  • Thats why benzene doesn't undergo polymerization reaction.
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