Q. Which of the following statements about Kevlar are correct?- It is an aramid (polyamide) fibre.
- It is used in bulletproof vests and helmets.
- It is a thermoplastic polymer.
Select the correct option from the codes given below:
Answer:
Only 1 & 2
Notes: Kevlar is an aramid (aromatic polyamide) fibre renowned for its high strength and is widely used in bulletproof vests and helmets. However, it is not a thermoplastic polymer; instead, Kevlar is a heat-resistant, highly crystalline material. Thus, only statements 1 and 2 are correct.