1.

Assertion (A) : Network polymers are thermosetting. Reason (R) : Network polymers have high - molecular mass.

Answer»

Assertion and reason both are correct statements but reason does not EXPLAIN assertion.
Assertion and reason both are correct statements and reason explain the assertion.
Both assertion and reason are wrong statements.
Assertion is correct STATEMENT and reason is wrong statement.

Solution :Assertion and reason both are correct statements but reason does not explain assertion.
Network polymers are thermosetting because they can.t be REUSED after heating once. Because after heating it undergo EXTENSIVE cross linking in moulds and again become infusible.


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