NEET Exam Model Paper 3

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Question : 61 of 180

Marks: +1, -0

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

increases the concentration of ions
decomposes Na2S and NaCN, if formed
helps in the precipitation of AgCl
increases the solubility product of AgCl

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