Question:
Which of the following does NOT give carbylamine test?
Which of the following does NOT give carbylamine test?
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The carbylamine test is used to detect primary amines, where a positive result leads to the formation of an isocyanide. Secondary and tertiary amines do not give this test.
Updated On: Mar 28, 2026
- Ethylamine
- Sec. butylamine
- Isopropylamine
- Dimethylamine
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the carbylamine test.
The carbylamine test is used to detect primary amines. In this test, the amine reacts with chloroform (CHCl\(_3\)) and sodium hydroxide (NaOH) to form an isocyanide (carbylamine), which typically gives a strong odor. Secondary and tertiary amines do not give this test.
Step 2: Analyzing the options.
(A) Ethylamine: Ethylamine is a primary amine and will give a positive carbylamine test.
(B) Sec. butylamine: Sec. butylamine is a secondary amine and will not give the carbylamine test.
(C) Isopropylamine: Isopropylamine is a secondary amine and will not give the carbylamine test.
(D) Dimethylamine: Dimethylamine is a secondary amine and will not give the carbylamine test.
Step 3: Conclusion.
The correct answer is (D) Dimethylamine.
The carbylamine test is used to detect primary amines. In this test, the amine reacts with chloroform (CHCl\(_3\)) and sodium hydroxide (NaOH) to form an isocyanide (carbylamine), which typically gives a strong odor. Secondary and tertiary amines do not give this test.
Step 2: Analyzing the options.
(A) Ethylamine: Ethylamine is a primary amine and will give a positive carbylamine test.
(B) Sec. butylamine: Sec. butylamine is a secondary amine and will not give the carbylamine test.
(C) Isopropylamine: Isopropylamine is a secondary amine and will not give the carbylamine test.
(D) Dimethylamine: Dimethylamine is a secondary amine and will not give the carbylamine test.
Step 3: Conclusion.
The correct answer is (D) Dimethylamine.
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