Question : The chemical formula of gypsum is ______.
Option 1: CaSO4.2H2O
Option 2: CaSO4.H2O
Option 3: CaSO4
Option 4: CaSO4.(1/2)H2O
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Correct Answer: CaSO 4 .2H 2 O
Solution : The correct answer is CaSO 4 .2H 2 O
The chemical formula of gypsum is CaSO 4 .2H 2 O . It is a hydrated calcium sulphate mineral and is commonly found in sedimentary rock formations.
The "2H 2 O" in the formula represents two water molecules that are chemically bound to the calcium sulphate. Gypsum has various uses, including in the construction industry for making plaster and in agriculture as a soil conditioner.
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