Aldehydes and Ketones - Result Question 76

####87. An alkene $A$ on ozonolysis yields acetone and an aldehyde. The aldehyde is easily oxidised to an acid $B$. When $B$ is treated with bromine in presence of phosphorus yields a compound $C$ which on hydrolysis gives a hydroxyl acid $D$. This acid can also be obtained from acetone by the reaction with hydrogen cyanide followed by hydrolysis. Identify the compounds $A, B, C$ and $D$.

$(1982,2 M)$

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