Key notes for class 12 Chemistry Chapter 12 Aldehydes Ketones and Carboxylic acid. it includes revision notes such as Aldehydes are the organic compounds in which carbonyl group is attached to one hydrogen atom and one alkyl or aryl group. Reduction of nitriles in presence of stannous chloride in presence of HCl gives imine which on hydrolysis gives corresponding aldehyde. Toluene or substituted toluene is converted to benzaldehyde in presence of chromic oxide in acetic anhydride. Side chain halogenation of toluene gives benzal chloride which on hydrolysis gives Benzaldehyde.
CBSE Class 12 Chemistry