Question

Assertion (A): For making rubber synthetically, isoprene molecules are polymerised.

Reason (R): Neoprene (a polymer of chloroprene) is a synthetic rubber.

• A. Both the assertion and the reason are incorrect statements
• B. Both the assertion and the reason are correct statements, but the reason is not the correct explanation of the assertion.
• C. The assertion is an incorrect statement, but the reason is a correct statement.
• D. The assertion is a correct statement, but the reason is an incorrect statement.
• E. Both the assertion and the reason are correct statements, and the reason is the correct explanation for the assertion.

Answer 1

The correct option is C

The assertion is an incorrect statement, but the reason is a correct statement.

Assertion:

Isoprene molecule is the monomer of natural rubber. So, isoprene cannot be used for making rubber synthetically.

Hence, the assertion is an incorrect statement

Reason:

Synthetic rubbers are either homopolymers of 1,3-butadiene derivatives or copolymers of 1,3-butadiene or its derivative with an unsaturated monomer.

Neoprene is a synthetic rubber formed by the polymerisation of chloroprene (2-Chloro-1,3-butadiene).

Hence, the reason is a correct statement.

The assertion is an incorrect statement, but the reason is a correct statement.

So, option (E) is the correct answer.