Primary, secondary and tertiary amines can be separated using :-
A
Para-Toluene sulphonyl chloride
BChloroform and $KOH$
C
Benzene sulphonic acid
D
Acetyl amide
JEE MAIN 2021, Medium
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A
Para-Toluene sulphonyl chloride
a Primary amines react with Para Toluene sulfonyl chloride to form a precipitate that is soluble in $NaOH$.
Secondary amines reacts with para toluene sulfonyl chloride to give a precipitate that is insoluble in $NaOH$.
Tertiary amines do not react with para toluen.
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Assertion : Alkyl isocyanides in acidified water give alkyl formamides.
Reason : In isocyanides, carbon first acts as a nucleophile and then as an electrophile