Question
Lactic acid is a:
This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Three-carbon molecule
Lactic Acid Structure Explained
Lactic acid, chemically known as 2-hydroxypropanoic acid, is an organic acid. Its chemical formula is $C_3H_6O_3$.
To determine the number of carbon atoms, examine the structure derived from its formula:
- The formula $C_3H_6O_3$ indicates three carbon atoms.
- The structure consists of a three-carbon chain. One carbon is part of a carboxyl group (COOH), another carbon atom is bonded to a hydroxyl group (OH) and a methyl group ($CH_3$), and the third carbon atom is part of the methyl group.
Therefore, lactic acid is classified as a three-carbon molecule.
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