Which one of the following is produced when acetone is saturated with $HCl$ gas?

To distinguish between formaldehyde and acetaldehyde,we require

The reactants $(A)$ and $(B)$ are:

Which of the following compounds undergo Cannizzaro reaction?
$(a)$ $HCHO$
$(b)$ $C_6H_5-CHO$
$(c)$ $CH_3-C(CH_3)_2-CHO$
$(d)$ $Ph-CH_2-CHO$

The reaction of $1-(\text{aminomethyl})cyclohexan-1-ol$ with $NaNO_2/HCl$ gives $A$. Identify $A$.

For the given reaction,find the sum of $x + y = ?$
$CH_3-CH_2-CO-CH_3 \xrightarrow[(ii) \ y \ mol \ NaNH_2]{(i) \ x \ mol \ PCl_5} CH_3-C \equiv C-CH_3$