White vitriol is -- – McqOptions

MCQOPTIONS

1.	White vitriol is --
A.	FeSO4, 7H2O
B.	ZnSO4, 7H2O
C.	MgSO4, 7H2O
D.	CuSO4, 7H2O
Answer» C. MgSO4, 7H2O

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