Nitrogen dioxide is not produced on heating

1.	Nitrogen dioxide is not produced on heating
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)to2KNO_(2)+O_(2)` `2Pb(NO_(3))_(2)overset(Delta)to2PbO+4NO_(2)+O_(2)` `2Cu(NO_(3))_(2)overset(Delta)to2CuO+4NO_(2)+O_(2)` `2AgNO_(3)overset(Delta)to2Ag+2NO_(2)+O_(2)`

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