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  9. Q107

UPPSC PCS 2020 · Question 107 of 148

Which one of the following substances is NOT synthetic?

Science & Tech

  1. AFibroinCorrect
  2. BLexan
  3. CNeoprene
  4. DTeflon

Answer: A. Fibroin

Explanation

Fibroin is a natural protein of silk; Lexan (polycarbonate), Neoprene and Teflon are synthetic.

Source: https://www.drishtiias.com/images/pdf/UPPSC 2020 Prelims GS Paper - 1.pdf

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