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Question

Choose the correct option
(a) Hydrogen is evolved by the action of cold dil. HNO3 on

A
Fe
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B
Cu
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C
Mg
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D
Zn
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Solution

The correct option is C 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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