1.

Assertion: Polybutadiene is an example of chain growth polymer. Reason : Copolymerization of butadiene and styrene gives Buna-S.

Answer»

If both assertion and reason are true , and reason is the true EXPLANATION of the assertion.
If both assertion and reason are true , but reason is not the true explanation of the assertion.
If assertion is true , but reason is false.
If both assertion and reason are false.

Solution :Correct explanation : During polymerization of butadiene , MOLECULES add to growing chain carrying a free RADICAL.


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