Lassaigne's test is used in the qualitative analysis to detect

Options

A. Nitrogen
B. Sulphur
C. Chlorine
D. All of these

Answer

D

Explanation

Nitrogen, sulphur and halogens are tested in an organic compound by lassaigne’s test.
The organic compound is fused with sodium metal as to convert these elements into ionisable inorganic substances.
`Na+C +N to NaCN`
`2Na+S to Na_(2)S`
`2Na+X_(2) to 2NaX`
The cyanide, sulphide or halide ions can be confirmed in aqueous solution by usual test.