Jee Advanced
Aldehydes Ketones And Carboxylic Acids
IIT-JEE 2010 Paper 2 Offline
MCQ+3 / -12010
Two aliphatic aldehydes $\mathbf{P}$ and $\mathbf{Q}$ react in the presence of aqueous $\mathrm{K}_2 \mathrm{CO}_3$ to give compound $\mathbf{R}$, which upon treatment with HCN provides compound $\mathbf{S}$. On acidification and heating, $\mathbf{S}$ gives the product shown below :

The compounds P and Q respectively are :
