Question

pick the odd one and give reoson

Potassium nitrate, Sodium nitrate, Copper sulphate, Calcium sulphate.
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Answer 1

Answer:

copper sulphate

hope you are doing

Answer 2

Answer:

As per MY OBSERVATION

COPPER SULPHATE

Explanation:

All the provided salts are colourless in their state....but when hydrated , CuSO4 turns blue while all others remain colourless/white.