JEE Main20258 Apr 2025Evening ShiftChemistryAlcohols Phenols and EthersActual
Match the List-I with List-II array |l|l|l|l| & array l List-I (Reagent) array & & array c List-II (Functional Group detected) array A. & array l Sodium bicarbonate solution array & I. & array l double bond/unsaturation array B. & array l Neutral ferric chloride array & II. & carboxylic acid C. & array l ceric ammonium nitrate array & III. & phenolic - OH D. & array l alkaline KMnO array & IV. & alcoholic - OH array
Options
- AA-II, B-III, C-IV, D-I
- BA-II, B-III, C-I, D-IV
- CA-III, B-II, C-IV, D-I
- DA-II, B-IV, C-III, D-I
Correct answer
A. A-II, B-III, C-IV, D-I
Step-by-step solution
(1) Carboxylic acid gives efferve scence with sodium bicarbonate solution (2) Phenolic-OH gives voilet coloured complex with Neutral FeCl ₃ . (3) Alcoholic-OH gives Red colour with cerric ammonium Nitrate. (4) When alkaline KMnO ₄ reacts with an unsaturated compound (Alkene or alkyne) the purple colour of KMnO ₄ solution disappears, indicating positive test for unsaturation.