Question

Among the following the weakest base is

• A. $C _{6} H _{5} CH _{2} NH _{2}$
• B. $C _{6} H _{5} CH _{2} NHCH _{3}$
• C. $O _{2} NCH _{2} NH _{2}$
• D. $CH _{3} NHCHO .$

Answer 1

Answer: (D)

$CH _{3} NHCHO .$

Answer 2

Carbonyl group exerts an electron withdrawal effect due to which basicity at ??N atom decreases.