Two isomeric compounds A and B have the molecular formula C ₈ H ₁₀ O and both contain a benzene ring. When treated with Pyridinium Chlorochromate (PCC), compound A forms product C , while compound B forms product D . Product C gives a red precipitate with an alkaline solution of copper sulphate and sodium citrate. Product D gives a yellow precipitate with potassium iodide and sodium hypochlorite, but does not give a

Step-by-step solution

Compound A is oxidized by PCC to C , which gives a positive test with alkaline copper sulphate and sodium citrate (Benedict's reagent). This indicates that C is an aliphatic aldehyde, meaning A must be a primary alcohol where the - OH group is not directly attached to the aromatic ring or a benzylic carbon (as benzylic oxidation would yield an aromatic aldehyde, which fails Benedict's test). For the formula C ₈ H ₁₀ O , A is 2-phenylethanol ( C ₆ H ₅ CH ₂ CH ₂ OH ), and C is phenylacetaldehyde ( C ₆ H ₅ CH ₂ CHO ).