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1 question · 1995 · answers as per the UPSC key
UPSC 1995 · Q102 · Science & Technology › Materials & Engineering · Save
Which one of the following polymers is widely used for making bullet-proof material?
(a) Polyvinyl chloride
(b) Polyamides
(c) Polyethylene
(d) Polycarbonates
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Answer: (d) Polycarbonates