A) \[+\]R effect of \[-\]\[N{{H}_{2}}\] group
B) \[-\]1 effect of \[-\]\[N{{H}_{2}}\] group
C) \[-\]R effect of \[-\]\[N{{H}_{2}}\] group
D) hyperconjugation effect
Correct Answer: A
Solution :
[a] The reason for the lesser basicity of aniline as compared to that of cyclohexylamine is +R effect of \[-N{{H}_{2}}\] group (i.e., electron releasing resonance effect of\[-N{{H}_{2}}\] group).
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