Chemistry PYQ 88 of 152 · Everyday Chemistry

Light weight bullet proof helmets and jackets use which of the following fibres for their production?

  1. ATerylene
  2. BNylon
  3. CKevlar
  4. DNone of the above

70th BPSCAsked again

Show answer and explanation

Correct answer: (c) Kevlar

Explanation

Kevlar is a synthetic aramid fibre (developed by DuPont) with very high tensile strength – about five times stronger than steel per unit weight.

It absorbs and disperses impact energy while staying lightweight and flexible, ideal for bulletproof helmets and jackets.

Terylene (polyester) and Nylon lack this strength and impact resistance.

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