Question

Which of the following compounds does NOT contain >C=O group?

• A. Ether
• B. Ester
• C. Amide
• D. Acyl halide

Hint:

Ethers have the general formula R-O-R, without a carbonyl group (>C=O), unlike esters, amides, and acyl halides.

Answer 1

The Correct Option is A

Step 1: Identifying functional groups.
The >C=O group is a carbonyl group, found in compounds like esters, amides, and acyl halides. 

Step 2: Analyzing the options. 
(A) Ether: Correct — Ether does not contain a carbonyl group (>C=O). 
(B) Ester: Esters contain a carbonyl group (RCOOR). 
(C) Amide: Amides contain a carbonyl group (RCONH₂). 
(D) Acyl halide: Acyl halides contain a carbonyl group (RCOCl). 

Step 3: Conclusion. 
The correct answer is (A) Ether, as it does not contain a carbonyl group.