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Question

Nitric acid (HNO3) is not used in the manufacture of H2 gas because it is a strong .

A
oxidising agent
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B
reducing agent
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C
dehydrating agent
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Solution

The correct option is A oxidising agent
HNO3 is a very powerful oxidising agent and thus oxidises the released H2 into H2O. Hence, H2 gas is not liberated.

3Zn+8HNO33Zn(NO3)2+4H2O+2NO

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