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Q 2782167037.    

Assertion : Crystals of hydrated calcium sulphate (gypsum: (`CaSO_4 . 2 H_2O`) are soft and easily cleaved.

Reason : Crystals of anhydrous calcium sulphate (anhydrite: `CaSO_4`) are very hard and very difficult to cleave.

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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