BPSC – Combined Competitive Examination · ಪ್ರಶ್ನೆ 11
What is the fibre used to make bulletproof jackets?
ಉತ್ತರ ತೋರಿಸು ಮತ್ತು ವಿವರಣೆ
ಉತ್ತರ: (D) Kevlar
ವಿವರಣೆ
Kevlar (DuPont) is a para-aramid fibre about five times stronger than steel by weight.
- (A) ತಪ್ಪು
Wrong: not strong enough to stop bullets.
- (B) ತಪ್ಪು
Wrong: a polyester for clothing.
- (C) ತಪ್ಪು
Wrong: a woollen fabric.
- (D) ಸರಿ
Correct: Kevlar, an aramid fibre, has very high tensile strength.