The major product obtained in the following reaction is:

Which of the following can decolorize aldehydes and ketones?

Which of the following does not give a yellow solid on treatment with sodium hypoiodite?

For $C_6H_5CHO$,which of the following is incorrect?

Which among the following has the lowest boiling point?

Considering the following reaction sequence,the correct statement$(s)$ is(are):
$A$. Compounds $P$ and $Q$ are carboxylic acids.
$B$. Compound $S$ decolorizes bromine water.
$C$. Compounds $P$ and $S$ react with hydroxylamine to give the corresponding oximes.
$D$. Compound $R$ reacts with dialkylcadmium to give the corresponding tertiary alcohol.