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(NH(4))(2)Cr(2)O(7) on heating liberate...

`(NH_(4))_(2)Cr_(2)O_(7)` on heating liberates a gas. The same gas will be obtained by

A

heating `NH_4NO_3`

B

heating `NH_4NO_2`

C

treating `H_2O_2 " with " NaNO_2`

D

treating `Mg_3N_2 "with" H_2O`

Text Solution

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The correct Answer is:
B
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