The principal product of the reaction between methyl butanoate and $2$ moles of $CH_3MgBr$ after hydrolysis is

$PhMgBr$ [Excess] + $CH_3COCl \xrightarrow{H_3O^+}$
The final product of the above reaction is:

Which of the following compounds will react with ethanolic $KCN$?

Which of the following compounds would undergo aldol condensation,which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction.
$(i)$ Methanal $(ii)$ $2-$Methylpentanal $(iii)$ Benzaldehyde $(iv)$ Benzophenone $(v)$ Cyclohexanone $(vi)$ $1-$Phenylpropanone $(vii)$ Phenylacetaldehyde $(viii)$ Butan$-1-$ol $(ix)$ $2,2-$Dimethylbutanal

The reagent with which both aldehyde and acetone react easily is

The mixed aldol products obtained from the aldol condensation of ethanal $(CH_3CHO)$ and propanone $(CH_3COCH_3)$ are: