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Q.

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

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a

NO2

b

O2

c

N2

d

N2O

answer is B.

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Detailed Solution

Conc. HNO3 is used to process PbO2 to form oxygen gas.

2PbO2+4HNO3→2PbNO32+2H2O+O2

Hence correct option is B.

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