Identify correct statements:
(A) Primary amines do not give diazonium salts when treated with \({NaNO}_2\) in acidic condition.
(B) Aliphatic and aromatic primary amines on heating with \({CHCl}_3\) and ethanolic \({KOH}\) form carbylamines.
(C) Secondary and tertiary amines also give carbylamine test.
(D) Benzenesulfonyl chloride is known as Hinsberg’s reagent.
(E) Tertiary amines react with benzenesulfonyl chloride very easily.
Choose the correct answer from the options given below:
(B) Aliphatic and aromatic primary amines on heating with \({CHCl}_3\) and ethanolic \({KOH}\) form carbylamines.
(C) Secondary and tertiary amines also give carbylamine test.
(D) Benzenesulfonyl chloride is known as Hinsberg’s reagent.
(E) Tertiary amines react with benzenesulfonyl chloride very easily.
Choose the correct answer from the options given below:
Show Hint
- (D) and (E) only
- (B) and (D) only
- (A) and (B) only
- (B) and (C) only
The Correct Option is B
Solution and Explanation
To identify the correct statements from the options given, let's analyze each one:
(A) Primary amines do not give diazonium salts when treated with \({NaNO}_2\) in acidic condition.
This statement is incorrect. Primary aromatic amines react with sodium nitrite \(({NaNO}_2)\) in acidic conditions to form diazonium salts. Therefore, this statement is false.
(B) Aliphatic and aromatic primary amines on heating with \({CHCl}_3\) and ethanolic \({KOH}\) form carbylamines.
This statement is correct. The reaction mentioned is the carbylamine reaction (or isocyanide test), which is a test for primary amines, especially aliphatic and aromatic ones.
(C) Secondary and tertiary amines also give carbylamine test.
This statement is incorrect. Only primary amines respond to the carbylamine test to form isocyanides; secondary and tertiary amines do not give this reaction.
(D) Benzenesulfonyl chloride is known as Hinsberg’s reagent.
This statement is correct. Benzenesulfonyl chloride is used in the Hinsberg test to distinguish between primary, secondary, and tertiary amines.
(E) Tertiary amines react with benzenesulfonyl chloride very easily.
This statement is incorrect. Tertiary amines do not react with benzenesulfonyl chloride under mild conditions like primary and secondary amines do.
Based on this analysis, the correct statements are:
(B) and (D) only
Top Questions on Amines
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(c) Increasing order of solubility in water: C$_6$H$_5$NH$_2$, (C$_2$H$_5$)$_2$NH, C$_6$H$_5$NHCH$_2$CH$_3$ - Assertion (A): Acetanilide is less basic than aniline.
Reason (R): Acetylation of aniline results in decrease of electron density on nitrogen. - Hoffmann Bromamide degradation reaction is given by:
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