A solution of colourless salt H on boiling with excess NaOH produces a non-flammable gas. The gas evolution ceases after some time. 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 some time. 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)CI` `(NH_(4))_(2)SO_(4)` SOLUTION :`NH_(4)^(+)` salts liberate `NH_(3)` with `NaOH` `NH_(4)NO_(3)` liberates `N_(2)O` (FLAMMABLE gas)