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Question

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+2HNO3Mg(NO3)2+H2

Hence option C is correct.​

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