What is the chemical formula of POP (Plaster of Paris)?

What is the chemical formula of POP (Plaster of Paris)?

Q. What is the chemical formula of POP (Plaster of Paris)?

  1. CaSO4.2H2O
  2. CaSO4.3H2O
  3. CaSO4.1/2H2O
  4. CaCO3.1/2H2

Answer: Option (C)

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