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A mixture containing urea and napthalene...

A mixture containing urea and napthalene can be separated by

A

Passing `H_(2)S` in acid medium

B

Passing `H_(2)S` in alkaline medium

C

Passing `H_(2)S` in neutral medium

D

Passing `H_(2)S` in dry mixture

Text Solution

Verified by Experts

The correct Answer is:
A
`Cu^(2+)` will be precipitated as `CuS` in acidic medium where as `Ni^(+)` is not precipitated .
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