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Question

Green vitriol is formed by:

A
FeS2+H2O+O2
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B
FeS2+H2O+CO2
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C
FeS2+CO+CO2
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D
FeS2+CO
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Solution

The correct option is A FeS2+H2O+O2
Green vitrdiol is FeSO4.7H2O. It is prepared by reaction of FeS2 with H2O and O2
2FeS2+2H2O+7H2O2FeSO4+2H2SO4

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