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Which of the following salts produces ni...

Which of the following salts produces nitrogen by decomposition ?
I. `Pb(NO_(3))_(2)`
II. `NH_(4)NO_(2)`
III. `NaN_(3)`
IV. `(NH_(4))_(2) Cr_(2)O_(7)`

A

I and III only

B

II and III only

C

I, III and IV only

D

II, III and IV only

Text Solution

Verified by Experts

The correct Answer is:
D
`PB(NO_(3))_(2) overset(Delta)rarr PbO+ NO_(2)+O_(2)`
`NH_(4)NO_(2)overset(Delta)rarr N_(2)+H_(2)O`
`NaN_(3) overset(Delta)rarr Na+N_(2)`
`(NH_(2))_(2) Cr_(2)O_(7) overset(Delta)rarr Cr_(2)O_(3) +N_(2)+H_(2)O`
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