Question

The IUPAC name of \(\mathrm{CH_3-CH(OH)-COOH}\) is

• A. Lactic acid
• B. 2-Hydroxy propanoic acid
• C. Propanoic acid
• D. None of these

Hint:

In carboxylic acids, numbering starts from the carboxyl carbon; then name substituents with their positions.

Answer 1

The Correct Option is B

Step 1: Identify the parent chain.
The compound has three carbons with a carboxylic acid group \((-COOH)\) \(\Rightarrow\) parent acid is propanoic acid.
Step 2: Locate and name the substituent.
There is an \(-OH\) (hydroxy) substituent on the second carbon: \(\mathrm{CH_3\!-\!CH(OH)\!-\!COOH}\).
Step 3: Write the IUPAC name.
Position + substituent + parent: \(\boxed{\text{2-hydroxypropanoic acid}}\).
Step 4: Conclusion.
Hence, the correct option is (B).