One of the important use of ferrous sulphate is in the

1.	One of the important use of ferrous sulphate is in the
A.	Manufacture of blue black ink
B.	Manufacture of chalks
C.	Preparation of hydrogen sulphide
D.	Preparation of anhydrous ferric chloride
Answer» B. Manufacture of chalks

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One of the important use of ferrous sulphate is in the

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