Which of the following statements is`//`are correct?

Options

A. `PbO_(2)` reacts with `HCl` to evolve `Cl_(2)` gas.
B. `PbO_(2)` reacts with `HNO_(3)` to form `O_(2)` gas.
C. `Pb_(3)O_(4)` reacts with `HCl` to evolve `Cl_(2)` gas.
D. `Pb_(3)O_(4)` reacts with `HNO_(3)` to form `PbO_(2)`, but `O_(2)` is not liberated.

Answer

A, B, C, D

Explanation

`PbO_(2)` is poweful oxidising agent and liberates `O_(2)` with acid.
`PbO_(2)+4HClrarrPbCl_(2)+2H_(2)O+Cl_(2)`
b. `PbO_(2)+2HNO_(3)rarrPb(NO_(3))_(2)+H_(2)O+(1)/(2)O_(2)`
c. `Pb_(3)O_(4)+8HClrarr3PbCl_(2)+4H_(2)O+Cl_(2)`
d. `Pb_(3)O_(4)+4HNO_(3)rarrPb(NO_(3))_(2)+PbO_(2)+2H_(2)O`