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This question belongs to Agriculture Plant Pathology

Plant Pathology

?

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 & Solution

Correct Answer: Option B

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.

Question posted by Examveda

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