1.

Nitrogen dioxide is not produced on heation

Answer»

`KNO_(3)`
`Pb(NO_(3))_(2)`
`Cu(NO_(3))_(2)`
`AgNO_(3)`

Solution :`KNO_(3)` on heating gives `O_(2)` while all others GIVE `NO_(2)`
`{:(""2KNO_(3)overset(Delta)rarr 2KNO_(2) + O_(2)),(2 Pb(NO_(3))_(2)overset(Delta)rarr 2PbO + 4 NO_(2)+O_(2)),(2Cu(NO_(3))_(2) rarr 2 CuO + 4 NO_(2) + O_(2)),(" "2AgNO_(3) overset(Delta)rarr 2AG + 2NO_(2) + O_(2)):}`


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