Options: A . &nbspI, II only B . &nbspII, III only C . &nbspIII, IV only D . &nbspII, III. IV only

Question

Options:

A . I, II only

B . II, III only

C . III, IV only

D . II, III. IV only

Answer: Option B
:
B
Basic nature decreases by steric effect & phenyl groups as it has - R effect

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