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Which statement is not true about potash alum?

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An Intiative by Sri Chaitanya

It is used in dyeing industries

On heating it melts and loses its water of crystallization

Its aqueous solution is basic in nature,

Its empirical formula is KAl(SO₄)₂.12H₂O

answer is B.

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Detailed Solution

All statements are true except Option b since, alums when dissolved in water exhibit cationic hydrolysis of Al³⁺ ion.

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