Question

Compound ${}^{\prime }{A}^{\prime }$ has how many functional groups.

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is C $3$

Compound A is nothing but serine. We know that serine is an acidic amino acid. It has an $-OH$ group on the side chain. Since it is an amino acid, the functional groups $-COOH$ and $-N{H}_2$ are already present in it. Hence, there are a total of 3 functional groups present: $-OH,-COOH,-N{H}_2$.