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The correct formula for plaster of Paris is

Options

  1. ACaSO ₄ 4 H ₂ O
  2. BCaSO ₄ 2 H ₂ O
  3. CCaSO ₄ 1 2 H ₂ O
  4. DCaSO ₄ 1 H ₂ O

Correct answer

C. CaSO ₄ 1 2 H ₂ O

Step-by-step solution

Plaster of Paris (POP) is a hemihydrate of calcium sulphate. Its chemical formula is CaSO ₄ 1 2 H ₂ O [ or ( CaSO ₄ )₂ H ₂ O ] .

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