A) 2-butanamine
B) N-methylpiperidine
C) N-methyl-2-pentanamine
D) p-anisidine
Correct Answer: C
Solution :
N-methyl-2-pentanamine is a secondary amine because it contains imino-group\[(-\underset{|}{\mathop{N}}\,H)\] \[\underset{N-\text{methyl}\,2-\text{pentanamine}\,\text{(}{{\text{2}}^{\text{o}}}\,\text{amine)}}{\mathop{\overset{5}{\mathop{C}}\,{{H}_{3}}-\overset{4}{\mathop{C}}\,{{H}_{2}}-\overset{3}{\mathop{C}}\,{{H}_{2}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\underset{NH}{\mathop{\underset{|}{\mathop{\overset{2}{\mathop{C}}\,H}}\,}}\,}}\,}}\,-\overset{1}{\mathop{C}}\,{{H}_{3}}}}\,\]
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