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Alum is used as

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Chemistry
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Alum is used as

Answer & Solution
Correct Answer: Option D
It is aluminum potassium sulphate. This is the type of alum that you find in the grocery store for pickling and in baking powder. It is also used in leather tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof textiles.
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