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In Lassaigne's test for the detection of...

In Lassaigne's test for the detection of halogen , the sodium fusion extract is first boiled with concentrated nitric acid . This is

A

To dissolve `Ag_(2)S`

B

To remove silver halides

C

To decompose `Na_(2)S and NaCN`, if present

D

Because `Ag_(2)S` and `AgCN` are insoluble in nitric acid

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The correct Answer is:
C
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