Previous year MCQs

General science UPPSC 2017 GS-I
Question

Which one of the following is a natural polymer?

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Silk

Detailed Solution:

The correct answer is “Silk”.
Silk is a natural polymer. It is a protein produced by silkworms and is known for its strength, flexibility, and lustrous appearance.  
Polymer Description
Silk A natural polymer made of proteins, specifically fibroin, produced by silkworms.
Bakelite A synthetic polymer used in early plastics, made from phenol and formaldehyde.
Kevlar A synthetic polymer known for its strength and used in bulletproof vests, made from para-aramid fibers.
Lexan A brand name for polycarbonate, a synthetic polymer used in various applications like eyewear lenses and bullet-resistant glass.

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