Choose the correct option Hydrogen is evolved by the action of cold dil. HNO3 on
A
Mg
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B
Zn
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C
Cu
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D
Fe
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Solution
The correct option is A Mg Magnesium, on reaction with cold dil. HNO3 gives out hydrogen gas and forms magnesium nitrate solution. That is, Mg+2HNO3→Mg(NO3)2+H2