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  9. Q18

RRB Group D (Level-1 posts) 2022 · Question 18 of 598

A chemical compound X is prepared by heating gypsum. It is a white powder and used as a fireproofing material. Compound X is:

  1. Abaking soda
  2. Bwashing soda
  3. Cplaster of ParisCorrect
  4. Dsodium hydroxide

Answer: C. plaster of Paris

Explanation

Plaster of Paris is formed by heating gypsum, and it is widely used as a fireproofing material.

Source: RRB Group D 2022 Prev. Yr. Paper (17 Aug 2022) (Shift 1) - FreshersNow · reliable-secondary

← Q17View full paper (598 questions)Q19 →

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