1.

The compound that does not produce nitrogen gas upon thermal decomposition is :

Answer»

`(NH_(2))_(2)SO_(4)`
`Ba(N_(3))_(2)`
`(NH_(4))_(2)Cr_(2)O_(7)`
`NH_(4)NO_(2)`

Solution :Except for `(NH_(4))_(2)SO_(4)` which evolves `NH_(3)` upon strong heating, all other compounds decompose the PRODUCE `N_(2)` gas
`(NH_(4))_(2)SO_(4) overset("heat")to 2NH_(3)+H_(2)SO_(4)`
`(NH_(4))_(2)Cr_(2)O_(7) overset("heat") to N_(2)+4H_(2)O + Cr_(2)O_(3)`
`(NH_(4))_(2)NO_(2) overset("heat")to N_(2)+2H_(2)O`
`Ba(N_(3))_(2) overset("heat") to Ba+3N_(2)`


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