2012 · Q22
Which one among the following polymers is used for making bullet-proof material?
General KnowledgeChemistry
- APolyvinyl chloride
- BPolystyrene
- CPolyethylene
- DPolyamide
Explanation
Polyamides (e.g., Kevlar, an aramid polyamide) are used in bullet-proof vests; ultra-high-molecular-weight polyethylene is also used. Key: D.