A solution of colourless salt H on boiling with excess NaOH produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of Zn dust to the same solution, the gas evolution restarts. The colourless salt(s) H is (are)

A solution of colourless salt H on boiling with excess NaOH produces a

1.	A solution of colourless salt H on boiling with excess NaOH produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of Zn dust to the same solution, the gas evolution restarts. The colourless salt(s) H is (are)
Answer» `NH_(4)NO_(3)` `NH_(4)NO_(2)` `NH_(4)CL` `(NH_(4))_(2)SO_(4)` Solution :The colourless salt H may be either `NH_(4)NO_(3)orNH_(4)NO_(2)` and the non-inflammable gas is `NH_(3)` (a) `NH_(4)NO_(3)+NaOHoverset(Delta)toNH_(3)+NaNO_(3)+H_(2)O` Non-inflammable gas `4Zn+7NaOH+NaNO_(3)overset(Delta)to4Na_(2)ZnO_(2)+NH_(3)+2H_(2)O` Sod. zincate Gas EVOLUTION restarts (b) `NH_(4)NO_(2)+NaOHoverset(Delta)toNH_(3)+NaNO_(2)+H_(2)O` `3Zn+5NaOH+NaNO_(2)overset(Delta)to3Na_(2)ZnO_(2)+NH_(3)+H_(2)O`