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Primary amines can be distinguished from secondary and tertiary amines by reacting with which of the following?

Primary amines can be distinguished from secondary and tertiary amines by reacting with which of the following? Correct Answer Chloroform and alcoholic KOH

Primary amine reacts with CHCl3 and alc. KOH to form isocyanide while secondary and tertiary amines do not react.

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Primary amines are more soluble than tertiary amines of same formula.
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