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

Options

A. If both assertion and reason are correct and reason is correct explanation for assertion
B. If both assertion and reason are correct but reason is not correct explanation for assertion
C. If assertion is correct but reason is incorrect
D. If assertion and reason are both incorrect

Answer

D

Explanation

Correct assertion. Isoprene is a monomer of natural rubber.
Correct reason : In natural rubber, the monomers are linked by free radical addition polymerisation