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Question

The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it:

A
increases the concentration of ions
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B
decomposes Na2S and NaCN, if formed
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C
helps in the precipitation of AgCl
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D
increases the solubility product of AgCl
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Solution

The correct option is B decomposes Na2S and NaCN, if formed
factual

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