What is the chemical formula of POP (Plaster of Paris)? HomeAcids Bases and Salts MCQsWhat is the chemical formula of POP (Plaster of Paris)? Share your love WhatsApp Facebook Telegram Twitter Pinterest Q. What is the chemical formula of POP (Plaster of Paris)? CaSO4.2H2OCaSO4.3H2OCaSO4.1/2H2OCaCO3.1/2H2 Answer: Option (C)