Question

The formula of functional group for aldehyde is :

• A. \( -COOH \)
• B. \( -CHO \)
• C.
• D. \( -OH \)

Answer 1

The Correct Option is B

The question asks for the formula of the functional group for an aldehyde. Functional groups are specific groups of atoms within molecules that determine the characteristic chemical reactions of those molecules.

1. Understanding the Functional Group:

   An aldehyde is an organic compound that features a carbonyl center (C=O) bonded to at least one hydrogen atom. The general formula for aldehydes is RCHO, where R represents the alkyl or aryl group that can vary.

2. Aldehyde Functional Group:

   The functional group for aldehydes is represented by -CHO. This indicates the carbonyl group (C=O) bonded to at least one hydrogen atom.

3. Analyzing the Options:
   • -COOH: This is the carboxyl group, characteristic of carboxylic acids, not aldehydes.
   • -CHO: This is the correct functional group for aldehydes.
   • Image Attached: The image included in the options should ideally represent another functional group or molecule, which is not relevant here due to lack of description.
   • -OH: This represents the hydroxyl group, characteristic of alcohols.
4. Conclusion:

   The formula of the functional group for aldehydes is indeed -CHO.

Therefore, the correct answer to the question is:

Correct Answer: -CHO