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Question

When PbO2 reacts with conc. HNO3, the gas evolved is:

A
NO2
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B
O2
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C
N2
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D
N2O
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Solution

The correct option is B O2
2PbO2+4HNO32Pb(NO3)2+2H2O+O2

From the above equation, it is clear that it produces O2 gas.

Hence option B is correct.

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