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  4. When PbO2 reacts with concentrated HNO3, the gas evolved is

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Q. When $PbO_2$ reacts with concentrated $HNO_3$, the gas evolved is

KCETKCET 2018The p-Block Elements

Solution:

The reaction between $PbO_2$ and $HNO_3$ is unlikely (as mentioned in NCERT) however, PbO reacts with $HNO_3$