BPSC – Combined Competitive Examination · પ્રશ્ન 51
Melamine, used for making floor tiles, is an example of:
જવાબ બતાવો અને સમજૂતી
જવાબ: (D) Thermosetting plastic
સમજૂતી
Melamine and Bakelite are thermosetting plastics; they cannot be remoulded once set.
- (A) ખોટો
Wrong: polythene is a thermoplastic.
- (B) ખોટો
Wrong: melamine does not soften on reheating.
- (C) ખોટો
Wrong: PVC is a thermoplastic.
- (D) સાચો
Correct: melamine sets permanently on heating and resists heat and fire.