69th B.P.S.C. (Pre) 2023
What is the ‘fiber’ used to make bulletproof jackets?
aKevlar✓ Correct
bNylon
cTerylene
dTweed
Explanation
Kevlar is used to make bulletproof jackets. Kevlar is a polyamide, which is a type of polymer. It is a heat-resistant and high-strength synthetic polymer. Para-phenylenediamine and terephthaloyl chloride are the two monomers of Kevlar.
general-science