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RPF Sub-Inspector (Executive) 2019 · Question 19 of 82

What is the formula for Plaster of Paris?

  1. AG₂ sleeping₂ KI/2H₂O
  2. BG₂ sleep₄ KI/2H₂O
  3. CCaSO₄ KI/2H₂OCorrect
  4. DCaSO₄

Answer: C. CaSO₄ KI/2H₂O

Explanation

The correct answer is CaSO4.1/2 H2O. Plaster of Paris (POP) is a quick-setting gypsum plaster consisting of a fine white powder (calcium sulfate hemihydrate), which hardens when moistened and allowed to dry. .

Source: RPF SI Previous Year Paper 06-Jan-2019 — answer key & detailed solutions (ixambee PDF) · reliable-secondary

← Q18View full paper (82 questions)Q20 →

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