Q582
Gypsum contains
A.
18.6% Ca and 29.2% S
B.
29.2% Ca and 18.6% S
AnswerC.
19.5% Ca and 12.5% S
D.
12.5% Ca and 18.6%
Answer: Option B
Solution
Answer: Option B
Solution:
Gypsum is a soft sulphate mineral composed of calcium sulphate dehydrated with the chemical formula CaSO4·2H2O. It is widely mined and is used as a miraculous fertilizer. It is moderately soluble in water.Pure gypsum contains 29.2% of calcium (Ca) and 18.6% of Sulphur (S).