Question

Secondary amides are called as:

• A. $1^0$
• B. $2^0$
• C. $3^0$
• D. none of these

Answer 1

Answer: (B)

$2^0$

Primary amides are also called as $1^0$ amides. Secondary amides are also called as $2^0$ amides. Tertiary amides are also called as $3^0$ amides. A primary amide has general formula $RCO-N{H}_2$. A secondary amide has general formula $RCO-NHR$. A tertiary amide has general formula $RCO-N{R}_2$. $C{H}_{3}CON{H}_2$ is a primary amide. $C{H}_{3}CO-NHC{H}_3$ is a secondary amide. $C{H}_{3}CO-N\left(C{H}_3\right)C{H}_{2}C{H}_3$ is a tertiary amide.