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Oxides of Sulphur

In the detect...

Question

In the detection of halogen, nitric acid is added to the Lassaigne’s extract. Its main function is to

A

Oxidise the solution

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B

Make the reaction fast

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C

Destroy

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D

Provide a medium for the precipitation

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Solution

The correct option is D Provide a medium for the precipitation
NaCN and $N a_{2} S$ interferes in the reaction.

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