Question

Assertion
Neoprene can be further hardened by heating in presence of sulphur.
Reason
Neoprene contains allylic double bonds which help in introducing sulphur bridges between different polymer chains.
Neoprene can be further hardened by heating in presence of sulphur.

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> AIIMS 2015

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
• B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
• C. Assertion is true but Reason is false.
• D. Both Assertion and Reason are false.

Answer 1

The correct option is A Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

Neoprene or polychloroprene is a family of synthetic rubbers that are produced by polymerization of chloroprene. It exhibits good chemical stability and maintains flexibility over a wide temperature range.

Neoprene can be further hardened by heating in the presence of sulphur. It contains allylic double bonds which help in introducing sulphur bridges between different polymer chains.

The reason is the correct explanation for the assertion.
Correct option is (a)