Identify the most acidic hydrogen containing compound from the following.

Answer

A-c; B - b; C-b; D-b; E-b; F - a; G – b; H-c; I - b

Explanation

Part(A) `rarr` d-orbital resonance in (c)
Part (B) `rarr` - M effect of two keto group in (b)
Part - (C) `rarr` -M effect of - `NO_2` in (b)
Part -(D)- `rarr` -M effect of two keto group in (b)
Part -(E) `rarr` two equivalent resonating structure in (b)
Part-(F) `rarr` Alcohol are most acidic in (a)
Part -(G) `rarr` I effect of `overset(o+)(-NH_3)` in (b)
Part -(H) `rarr` -M of `-NO_2` will operate from ortho and para-position in (c)
Part -(I) `rarr` Conjugate base is resonace stabilized in (b) due sigma bond formation from ortho position rotation is restricted and effective delocalization taking place.