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