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A salt, when warmed with zinc powder and...

A salt, when warmed with zinc powder and an NaOH solution, gives a gas that turns a filter paper soaked with an alkaline solution of `K_(2)[HgI_(4)]` brown. The salt responds to the brown ring test when acetic acid is used in place of sulphuric acid. The anion present in the salt is:

A

`NO_(3)^(-)`

B

`NO_(2)^(-)`

C

`Br^(-)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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