The enol form of acetone,after treatment with $D_2O$,gives:

What will be the major product?

Acetaldehyde and acetone can be distinguished by

Write down functional isomers of a carbonyl compound with molecular formula $C_3H_6O$. Which isomer will react faster with $HCN$ and why? Explain the mechanism of the reaction also. Will the reaction lead to the completion with the conversion of whole reactant into product at reaction conditions? If a strong acid is added to the reaction mixture what will be the effect on concentration of the product and why?

Addition of hydrogen cyanide $(HCN)$ to carbonyl compounds is:

The Tischenko reaction yields an ester in the presence of which catalyst?