1.

The crystals of ferrous sulphate on heating give :

Answer»

`FeO+SO_(2)+H_(2)O`
`FeO+SO_(3)+H_(2)SO_(4)+H_(2)O`
`Fe_(2)O_(3)+SO_(2)+H_(2)SO_(4)+H_(2)O`
`Fe_(2)O_(3)+H_(2)SO_(4)+H_(2)O`

SOLUTION :`FeSO_(4). 7H_(2)O to FeSO_(4)+7H_(2)O`
`2FeSO_(4) overset(DELTA)to Fe_(2)O_(3)+SO_(2)+SO_(3)`


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