Match the compounds in Column I with their characteristic test(s)/reactions(s) given in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 4 matrix given in the ORS.

Step-by-step solution

A-r; B-p, q; C- p, q, r; D-p Sodium fusion extract gives Prussian blue when nitrogen is present alongwith carbon. Phenolic group and carboxylate gives positive FeCl ₃ test - white precipitate comes with AgCl . Hydrazone formation occurs effectively at pH 4.5 . The reaction proceeds in that condition only when H ⁺ concentration is merely sufficient to activate. As H ⁺ concentration raises, sufficient molecule of hydrazone gets converted into hydrazonium which is not nucleophilic and reaction becomes impossible. Furt