Questions
Which gas is evolved when PbO2 is treated with conc HNO3?
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By Expert Faculty of Sri Chaitanya
a
NO2
b
O2
c
N2
d
N2O
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Correct option is B
PbO2 is powerful oxidising agent and liberates O2 when treated with acids.PbO2+2HNO3⟶PbNO32+H2O+12O2PbO2+4HCl⟶PbCl2+2H2O+Cl2
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