Which of the following gas is obtained when acids reacts with reactive metals?
A
Hydrogen
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B
Nitrogen
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C
Oxygen
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D
Sulphur dioxide
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Solution
The correct option is A Hydrogen When acids react with active metals, hydrogen gas is obtained. For example, when Zn reacts with the sulphuric acid, zinc sulphate and hydrogen gas are obtained. Zn+H2SO4→ZnSO4+H2↑