Through which of the following reactions number of carbon atoms can be increased in the chain?
(i) Grignard reaction
(ii) Cannizaro’s reaction
(iii) Aldol condensation
(iv) HVZ reaction
The answer is the option (i,iii) Grignard reaction is used to increase the number of carbon atom in chain. Aldol condensation increases the number of carbon atom in the chain for aldehydes and ketones.