1.

Which of the following is pseudo alum :

Answer»

`(NH_4)_2SO_4. Fe_2(SO_4)_3. 24H_2O`
`K_2SO_4. Al_2(SO_4)_3. 24H_2O`
`MnSO_4. Al_2(SO_4)_3. 24H_2O`
NONE of the above

Answer :C


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