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