1.

Which of the following(s) when heated give nitrogen gas

Answer»

`(NH_(4))_(2) Cr_(2)O_(7)`
`Ba(N_(3))_(2)`
`NH_(4)NO_(3)`
both (a) and (b)

Solution :`(NH_(4))Cr_(2)O_(7) overset(Delta)N_(2)+Cr_(2)O_(3) +4H_(2)O`
`Ba(N_(3))_(2) overset(Delta)to3N_(2)+Ba`
`NH_(4)NO_(3) overset(Delta)to N_(2)O +2H_(2)O`


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