1.

Molecular formula of Epsom salt is ………..

Answer»

`CuSO_4.5H_2 O`
`FeSO_4 .7H_2O`
`MgSO_4 .7H_2O`
`ZnSO_4 .7H_2O`

SOLUTION :`MgSO_4 .7H_2O`


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