Alum is used to purify water since it acts as

Bactericide

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De-odorant

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Softener

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Coagulant

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Solution

The correct option is D
Coagulant

Al³⁺ ions in potash alum (K₂SO₄.Al(SO₄)₃.24H₂O) coagulates mud particles in water

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Alum is used to purify water since it acts as

O_{3}

C l_{2}

O_{3}

O_{2}

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