Question

Question 9. Assertion (A) Thermosetting plastics can not be remoulded. Reason (R) Thermosetting plastics can be softened on heating. * a. (A) is correct and (R) is the correct explanation of (A). b. (A) is correct and (R) is not the correct explanation of (A). c.(A) is correct and (R) is wrong. d. (A) is wrong and (R) is correct.​

Answer 1

Answer:

The correct option is

A)Both assertion and reason are correct

Explanation:

Thermosetting plastics are those plastics which once moulded cannot be remoulded by heating. They are strong, durable and resists heat to a large extent. The well known examples are bakelite and melamine.

During initial moulding, thermosetting plastics form strong cross-links between them which gives them their strong structure.