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UPSC 1995: 102. 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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Not attemptedCorrect Answer: (d) Polycarbonates
Polycarbonate plastics are exceptionally tough and are laminated with glass to manufacture bullet-resistant windows and shields; hence the polymer most widely used for bullet-proof material is polycarbonate. Other listed polymers (PVC, polyamides such as Kevlar, and polyethylene) have many uses, but the standard engineering plastic for bullet-proof laminates is polycarbonate. ([britannica.com](https://www.britannica.com/science/bisphenol-A))
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What is the correct answer to this UPSC 1995 Science & Technology question?▼
The correct answer is option (d): Polycarbonates. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Materials & Engineering question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 1995, GS Paper 1, as Question 102. It falls under Science & Technology > Materials & Engineering.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Materials & Engineering?▼
UPSC has asked 23 questions from Materials & Engineering (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.