CDS 2020 PYQ with Answer — The number of water molecules associated with copper sulphate molecul… | UPSC One

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CDS 2020 · General Knowledge (CDS-I)Q22

Back to the full 2020 paper

2020 · Q22

The number of water molecules associated with copper sulphate molecule to form crystals is

General KnowledgeChemistry

A2
B4
C5
D6

Explanation

Blue vitriol crystallises as the pentahydrate CuSO4.5H2O. Each copper sulphate molecule in the crystal is associated with five molecules of water of crystallisation. Hence C.

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