1.

Which of the following is pseudo alum ?

Answer»

`(NH_(4))_(2)SO_(4).FE(SO_(4))_(3).24H_(2)O`
`K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O`
`MnSO_(4).Al_(2)(SO_(4))_(3).24H_(2)O`
None

Solution :The general FORMULA of alum is `overset(+1)(M_(2))SO_(4).overset(+3)(M_(2))(SO_(4))_(3).24H_(2)O`


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