1.

Y is obtaned by the decomposition of a substance X. Oxygen present in. Y reacts with a neutral oxide and evolves Z which is composed of reddish brown fumes which turns moist blue litmus red. Identify X, Y and Z.

Answer»

`H_(2)O_(2),H_(2)" and "CO_(2)`
`H_(2)O_(2),O_(2)" and "NO_(2)`
`KCIO_(3),CI_(2)" and "O_(2)`
`HgO, O_(2)" and "NO`

Solution :`underset((X))(H_(2))O_(2)toH_(2)O_(2)+underset((Y))(O_(2))`
`NO+underset((Y))(O_(2))tounderset(("reddish brown"))underset((Z))(NO_(2))`
`O_(2)` (Y) is neutral towards litmus whlile `NO_(2)` is acidic and HENCE turns moist BLUE to RED.


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