A gaseous substance dissolve in water gi...

A gaseous substance dissolve in water giving a pale blue solution which decolouises `KMnO_(4)` and oxidises `Kl` to `l_(2)` in acidic medium :

`N_(2)O_(5)`

`NH_(3)`

`N_(2)O_(3)`

`HNO_(3)`

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The correct Answer is:

`N_(2)O_(3)` dissolves in `H_(2)O` to give a mixture of `HNO_(3)andHNO_(2).HNO_(2)` being a reducing agent decolourises `KMnO_(4)` solution. Both `HNO_(3)andHNO_(2)` act as oxidising agents and hence osxidise KI ot `I_(2)`.

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A gaseous substance dissolve in water giving a pale blue solution which decolouises `KMnO_(4)` and oxidises `Kl` to `l_(2)` in acidic medium :

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