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