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. |
A) 1 and 3 are correct
B) 2 and 4 are correct
C) 1 and 4 are correct
D) 3 and 4 are correct.
Correct Answer: B
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