Aqueous solution of potash alum is :

alkaline

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acidic

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neutral

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soapy

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Solution

The correct option is A acidic
Potash alum is potassium aluminium sulfate. Its aqueous solution with water turns blue litmus red in color so it is acidic in nature. It is used as an astringent.

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[K_{2} S O_{4} . A l_{2} (S O_{4})_{3} .24 H_{2} O]

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