Gypsum contains
A. 18.6% Ca and 29.2% S
B. 29.2% Ca and 18.6% S
C. 19.5% Ca and 12.5% S
D. 12.5% Ca and 18.6%
Answer: Option B
Solution (By Examveda Team)
Gypsum contains 29.2% Ca and 18.6% S.Gypsum is a soft sulphate mineral composed of calcium sulphate dehydrate, with the chemical formula CaSO4·2H2O. Gypsum provides two of the secondary plant macronutrients, calcium and sulphur.
Gypsum is also formed as a by-product of sulphide oxidation, amongst others by pyrite oxidation, when the sulfuric acid generated reacts with calcium carbonate. Its presence indicates oxidizing conditions.
This Question Belongs to Agriculture >> Plant Pathology
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