Identify the product in the following reaction: $Pent-3-enenitrile \xrightarrow[H_3O^+]{AlH(i-Bu)_2} \text{Product}$

Explain the method of preparation of aldehydes and ketones from Grignard reagents with suitable examples.

Which of the following sets of reagents convert toluene to benzaldehyde?
$A$. $Cl_2 / h\nu ; H_2O, \Delta$
$B$. $Cl_2 / Fe ; H_2O$
$C$. $KMnO_4 / OH^{-} ; H^{+}$
$D$. $CrO_2Cl_2 / CS_2 ; H_3O^{+}$

Identify $X$ and $Y$ in the reactions given below:

$Ethyl \ methyl \ ketone$ is obtained by heating calcium salts of

Which one of the combinations will give propanaldehyde on dry distillation?