Question : Epsom is an ore of
Correct Answer: B
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Question : Marble mainly contains
Correct Answer: A
Question : Formula of washing soda is
Correct Answer: D
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Question : The color of KMnO4 is
Correct Answer: C
Question : Corrosion of a metal produces
Question : We use tetracthyl lead Pb(C2H5)4 in gasoline (motor fuel) to
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