JEE Chemistry 2025 Question with Solution

Given: The acids listed are adipic acid, aspartic acid, ascorbic acid, and saccharic acid.

Find: Which one is a vitamin.

A vitamin is an organic compound that is essential for normal growth and nutrition and is required in small quantities in the diet.

Among the given options:

• Adipic acid is a dicarboxylic acid used in nylon production.
• Aspartic acid is an amino acid.
• Ascorbic acid is also known as Vitamin C.
• Saccharic acid is an oxidation product of sugars.

Therefore, the acid that is a vitamin is Ascorbic acid.

The correct option is C.

Given: The question asks which listed acid is a vitamin.

Find: The correct option.

Recognise the common name first: ascorbic acid is the chemical name for Vitamin C.

The other options are not vitamins:

• Adipic acid is an industrial dicarboxylic acid.
• Aspartic acid is an $\alpha$-amino acid found in proteins.
• Saccharic acid is an oxidation product of sugars.

Ascorbic acid is an essential nutrient for humans and its chemical formula is $\mathrm{C_6H_8O_6}$.

Deficiency of ascorbic acid causes scurvy, which confirms that it is a dietary vitamin.

Therefore, the correct option is C (Ascorbic acid).