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Question

Which gas is released when iron reacts with conc nitric acid?

A
Nitrous oxide
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B
Nitric oxide
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C
Nitrogen dioxide
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D
None of the above
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Solution

The correct option is C Nitrogen dioxide

Nitrogen dioxide gas is formed when iron reacts with conc nitric acid.

Fe+6HNO3 Fe(NO3)3+3H2O+3NO2


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