Chemistry - Halogen Derivative Question with Solution | TestHub
ChemistryHalogen DerivativeNUCLEOPHILIC SUBSTITUTION REACTIONS (SN1 AND SN2), SN(NEIGHBOURING GROUP PARTICIPATION), SNIEasy2 minPYQ_2026
ChemistryEasysingle choice
Which from following amines does NOT form alkyl isocyanide when heated with alc. KOH and chloroform
Options:
Answer:
C
Solution:
The reaction of an amine with chloroform and alcoholic KOH to form an alkyl isocyanide is known as the carbylamine reaction.
This test is given only by primary (aliphatic and aromatic) amines. Secondary and tertiary amines do not respond to this test.
Methanamine, propan-2-amine, and ethanamine are primary amines, so they will form alkyl isocyanides.
N, N-Diethylethanamine is a tertiary amine, hence it does not undergo the carbylamine reaction and will not form an alkyl isocyanide.
Answer: N, N-Diethylethanamine
Stream:MHT_CETSubject:ChemistryTopic:Halogen DerivativeSubtopic:NUCLEOPHILIC SUBSTITUTION REACTIONS (SN1 AND SN2), SN(NEIGHBOURING GROUP PARTICIPATION), SNI
⏱ 2mℹ️ Source: PYQ_2026
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