Question

Assertion: Plaster of paris is stored in a moisture proof container.

Reason: Plaster of paris set into a hard mass on wetting with water to form anhydrous calcium sulphate.

Reason Assertion based question:

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true and R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.​

Answer 1

Answer:

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Explanation:

• Both A and R are true and R is the correct explanation of A.

Plaster of Paris, quick-setting gypsum plaster consisting of a fine white powder (calcium sulphate hemihydrate), which hardens when moistened and allowed to dry because plaster of Paris turns into Gypsum after reacting with moisture present in air. That’s why plaster of Paris should be stored in a moisture-proof container.

Answer 2

Answer:

• both A and R are true and R is the correct explanation of A
• both A and R are true and R is not the correct explanation of A
• A is true but R is false
• A is false but R true

Explanation:

both A and R are true and R is not the correct explanation of A