Question

The functional group –CHO is called:

• A. ether group
• B. carbonyl group
• C. aldehydic group
• D. alcoholic group

Hint:

Remember: - \( -CHO \) → Aldehyde - \( >C=O \) → Carbonyl - \( -OH \) → Alcohol

Answer 1

The Correct Option is C

"Concept: Functional groups determine the chemical properties of organic compounds. The group \( -\mathrm{CHO} \) represents:

A carbon atom double bonded to oxygen (carbonyl) 
The same carbon bonded to hydrogen 
This specific structure defines an aldehyde. 
Step 1: Structure of the group: \[ -\mathrm{CHO} = -\mathrm{C}(=O)\mathrm{H} \] 
Step 2: Classification: 

Ether group: \( -O- \) 
Carbonyl group: general \( >C=O \) 
Alcoholic group: \( -OH \) 
Aldehydic group: \( -CHO \) 
Thus, the functional group \( -\mathrm{CHO} \) is the aldehydic group.