Benzaldehyde can be obtained from benzal chloride. Write the reactions for obtaining benzal chloride and then benzaldehyde from it.
It.is the commercial method for preparing benzaldehyde. Benzal chloride can be obtained by photochlorination of toluene, i.e. chlorination of tdluene in the presence of sunlight. Then, benzal chloride on heating with boiling water produces benzaldehyde as shown below: