What is the product formed when acetone reacts with $I_2$ in the presence of $NaOH$?

Which of the following compounds gives the $2,4-DNP$ test?

Consider the following reaction,where:
$(A)$ The change in the functional group and
$(B)$ The corresponding change in the hybridization from the starting material to the final product are:
$CH_3-C \equiv N \xrightarrow[(ii) \ HI + \text{Red } P]{(i) \ SnCl_2, HCl / H_3O^{+}}$

The major product of the following reaction is

The relation between $K_1$ and $K_2$ for the given equilibrium reactions is:

The following reagent converts $C_6H_5COCHO$ to $C_6H_5CHOHCOONa$.