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(NH4)2Cr2O7 on heating liberates a gas. ...

`(NH_4)_2Cr_2O_7` on heating liberates a gas. The same gas will be obtained by

A

heating `NH_4NO_2`

B

heating `NH_4NO_3`

C

treating `Mg_3N_2` with `H_2O`

D

heating `H_2O_2` on `NaNO_2`

Text Solution

Verified by Experts

The correct Answer is:
A
The reactions involved are
`(NH_4)_2 Cr_2O_7 oversetDeltatoN_2+Cr_2O_3 + 4H_2O`
`NH_4NO_2 to N_2+2H_2O`
Both evolve `N_2` gas.
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BRILLIANT PUBLICATION-P-BLOCK ELEMENTS-LEVEL-III
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