When alum is added to the waste water containing calcium ions which compound is

Question

When alum is added to the waste water containing calcium ions which compound is formed as a precipitate?

Options:

A . Al(OH)₃

B . Al₂(SO₄)₃

C . Ca(OH)₂

D . CaCO₃

Answer: Option A
Answer: (a).Al(OH)₃

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