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