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Question 11Asked in RRB JE CBT-1, 19 Feb 2026, Shift 2 (12:45 PM)

Which of the following statements about Plaster of Paris (POP) is CORRECT?

  1. APOP is CaSO4·2H2O and sets quickly on mixing with water
  2. BPOP is CaSO4·½H₂O and hardens by reacting with water
  3. CPOP is CaSO4·2H2O and is mainly used as a fertilizer
  4. DPOP is CaSO4·½H₂O and sets slowly without water
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Correct answer: (B) POP is CaSO4·½H₂O and hardens by reacting with water

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 2 (12:45 PM)

This is question 11 of RRB JE CBT-1 PYQ 19 Feb 2026, Shift 2 (12:45 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.