Why is nitric acid added to sodium extract before adding silver nitrate for testing halogens?

Why is nitric added to sodium extract before adding silver nitrate for testing halogens?

Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?

Nitric acid is added to sodium fusion extract and the solution is boiled before adding silver nitrate for testing halogens because

Explain why the sodium extract is boiled with nitric acid before adding silver nitrate solution for detecting halogens.

Why nitric acid is added in the Lassaigne's test for halogens?

The function of boiling the sodium extract with concentrated nitric acid before testing halogens is

The function of boiling the sodium extract with concentrated nitric acid before testing halogens is