List I (Reagents Used) | List II (Compound with Functional group detected) | ||
A | Alkaline solution of copper sulphate and sodium citrate | I | ![]() |
B | Neutral FeCl3 solution | II | ![]() |
C | Alkaline chloroform solution | III | ![]() |
D | Potassium iodide and sodium hypochlorite | IV | ![]() |
Choose the correct answer from the options given below :
A: Alkaline solution of copper sulphate and sodium citrate detects aldehydes. The aldehyde reacts to form a reddish-brown precipitate of Cu$_2$O.
B: Neutral FeCl$_3$ solution is used for detecting phenolic groups. Phenols give a characteristic color (violet or blue).
C: Alkaline chloroform solution (Haloform test) detects the presence of a methyl ketone or a methyl group adjacent to a hydroxyl group.
D: Potassium iodide and sodium hypochlorite (Iodoform test) confirms alcohol groups (-CH$_3$OH). \end{itemize}
The alkali metal with the lowest E M- M+ (V) is X and the alkali metal with highest E M- M+ is Y. Then X and Y are respectively: