Question

Which of the following amines has imino functional group?

• A. Ethyl amine
• B. Trimethyl amine
• C. Dimethyl amine
• D. Aniline

Hint:

The imino group is N with one H and two carbon groups, which is the group of secondary amines.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
The imino group is \(>\text{NH}\): nitrogen carrying one hydrogen and two carbon groups. It is the functional group of secondary amines.

Step 2: Classify the options
Ethylamine and aniline carry \(-\text{NH}_2\), so they are primary amines.
Trimethylamine has N with no H, so it is tertiary.

Step 3: Conclusion
Dimethylamine, \((\text{CH}_3)_2\text{NH}\), has N bonded to two methyl groups and one H, so it has the imino group.

Final Answer:
Dimethylamine has the imino group. \[ \boxed{\text{(C) }\text{Dimethyl amine}} \]