The carbylamine reaction produces isocyanides that are described as:
AFoul smelling
BFast setting
CFree flowing
DFirm setting
Answer & Solution
Correct answer: A. Foul smelling
1. The test is recognised by the nose rather than by a colour change.
2. The products give the reaction away immediately.
3. Primary amines on heating with chloroform and ethanolic potassium hydroxide form carbylamines which are foul smelling substances.
4. So the answer is foul smelling.
_Source: NCERT Class XII Chemistry Part II, Ch 9 'Amines'_
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