$A$ compound has a vapour density of $29$. On warming with an aqueous solution of alkali,it gives a yellow precipitate. The compound is

$RCH=O + H_2 \xrightarrow{\text{catalyst}} RCH_2OH$. Which catalyst is used for this reaction?

The above conversion can be carried out by:

For the conversion of cyclohexanone to $1-$hydroxy$-1-$methylcyclohexan$-2-$one,the correct order of reagents used is:
$(1)$ $CH_3MgBr / H^+$
$(2)$ $H^+ / \Delta$
$(3)$ $KMnO_4$ (cold dil.)
$(4)$ $CrO_3$

Which of the following statement$(s)$ is/are correct about the given compound?
$CH_3COCH_2COOC_2H_5$

Match the Column-$I$ with Column-$II$.

Column-$I$	Column-$II$
$A$. Acetophenone and Benzophenone	$P$. $NaHCO_3$
$B$. Phenol and Benzoic acid	$Q$. $NaHSO_3$
$C$. Propanone and Ethanal	$R$. $I_2 / NaOH$
$D$. Acetone and Acetophenone	$S$. Fehling solution