Q33
The active compound in mineral gypsum and phosphogysum is
A.
Calcium sulphate
AnswerB.
Phosphorus
C.
Both A and B
D.
Limestone
Answer: Option A
Solution
Answer: Option A
Solution:
The active compound in mineral gypsum and phosphogypsum is Calcium sulphate.Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.
Phosphogypsum (PG) is the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate rock. It is mainly composed of gypsum.
Although gypsum is a widely used material in the construction industry, phosphogypsum is usually not used but is stored indefinitely because of its weak radioactivity.