Plaster of Paris is made from what?
Answer and explanation
Correct answer: Gypsum
Plaster of Paris is prepared by gently heating gypsum, which is hydrated calcium sulphate, CaSO₄·2H₂O. Heating removes part of its water of crystallisation and forms calcium sulphate hemihydrate, CaSO₄·½H₂O, known as Plaster of Paris. Common salt, baking soda, and vinegar do not undergo this preparation process. Hence option A is correct.
Frequently asked questions
What is the correct answer to this question?
Gypsum
Why is this the correct answer?
Plaster of Paris is prepared by gently heating gypsum, which is hydrated calcium sulphate, CaSO₄·2H₂O. Heating removes part of its water of crystallisation and forms calcium sulphate hemihydrate, CaSO₄·½H₂O, known as Plaster of Paris. Common salt, baking soda, and vinegar do not undergo this preparation process. Hence option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
