In the given pair identify most acidic compound in $(A)$ and $(B)$ . Most basic in $(C)$ and $(D)$ .

A - (I), B - (I I), C - (I), D - (I I)

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A - (I I), B - (I), C - (I), D - (I I)

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A - (I I), B - (I I), C - (I I), D - (I I)

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A - (I), B - (I I), C - (I), D - (I)

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Solution

The correct option is B $A - (I I), B - (I), C - (I), D - (I I)$
Acidity increases with electron withdrawing group. Ortho effect increases acidity.
Basicity increases with electron donating group. Ortho effect decreases basicity.

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