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During the test of halogens by silver ni...

During the test of halogens by silver nitrate test, the sodium extract is first boiled with a few drops of conc. `HNO_3` to

A

Decompose sodium halides present

B

Help in the precipitation of `AgCl`

C

Increase the concentration of `NO_(3)^(-)` ions

D

Decompose `Na_2S` and `NaCN` if formed

Text Solution

Verified by Experts

The correct Answer is:
D
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