Question

Assertion (A) :Plaster of Paris is stored in a moisture proof container.Reason (R) :Plaster of
Paris sets into a hard mass on wetting with water to form anhydrous calcium sulphate.

Answer 1

Answer:

both assertion and reason are correct

Answer 2

Explanation:

Explanation:When Plaster of Paris reacts with water, then it forms gypsum [CaSO4.2H2O], which is hard in nature.

Explanation:When Plaster of Paris reacts with water, then it forms gypsum [CaSO4.2H2O], which is hard in nature. When we heat the gypsum at 100 degree celcius then we can obtain our plaster of paris back.

Formula of POP = [CaSO4.1/2 H2O + 1.5 H2O].

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