question_answer

Consider the following statements:

Thermosetting plastics are

1. Formed by addition polymerisation.

2. Formed by condensation polymerisation.

3. Softened on heating and hardened on cooling for any number of times.

4. Moulded by heating and cooling.

Of these statements:

A) 1 and 3 are correct         

B) 2 and 4 are correct

C) 1 and 4 are correct         

D) 3 and 4 are correct.