Question

In lassaigne's test for $N,S$ and halogen, the organic compound is:

• A. fused with sodium
• B. dissolved with sodamide
• C. extracted with sodamide
• D. fused with calium

Answer 1

The correct option is A fused with sodium

(A) fused with sodium

It is a general test for the detection of halogens, nitrogen and sulphur in an organic compound. The ionic compounds formed during the fusion are extracted in aqueous solution and can be detected by simple chemical tests. The extract is called sodium fusion extract or Lassaigne's extract.