Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Organic Chemistry
Which one of the following polymers is widely used for making bullet proof material ?
1
Polycarbonates
2
Polyamides
3
Polyethylene
4
More than one of the above
5
None of the above