I.  | II.  | III.  | IV.  |
A) III < II < IV <I
B) III < IV < II <l
C) II < IV < I< III
D) I < II < IV < III
Correct Answer: A
Solution :
I is most reactive because I is better leaving group than CI and carbonation is resonance stabilized by lone pair of oxygen, followed by IV and then II.
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