1.

Assertion: 1,3-Butadiene is the monomer for natural rubber. Reason : Natural rubber is formed through anionic addition polymerization.

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 assertion : Isoprene , i.e., 2 methyl-1,3-butadiene is the monomer of NATURAL rubber.
Correct reason : Natural rubber is formed through free RADICAL or cationic addition polymerisation.


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