Question

Amino acids are an example of:

• A. an acid
• B. a base
• C. an acidic salt
• D. an amphoteric substance

Answer 1

The correct option is D an amphoteric substance

Amino acids are of the form $R\left(N{H}_2\right)\left(COOH\right)$ where $R$ is a carbon chain or organic group. Due to presence of both basic $(-N{H}_2)$ and acidic $(-COOH)$ groups, amino acids are an example of amphoteric substance.