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Aldehydes and Ketones are basically carbonyl group with formulae's R-CH=O and R-C=OR'.

METHODS OF PREPERATION
Aldehydes and ketones could be prepared by various methods like
 * 1) by nitriles
 * 2) acid chlorides
 * 3) Grignard reagents

CHEMICAL REACTIONS OF ALDEHYDES AND KETONES

 * Reactions with alcohols
 * reactions with cyanides
 * reaction with sodium bisulphate

Reaction with alcohols
Reactions of aldehydes with alcohols would give rise to hemiacetals which are compounds that are unstable which would further react with another molecule of alcohol in presence of an acidic medium to give rise to acetals which are stable compounds.

Reaction with cyanides
Reaction of aldehydes or ketones with cyanides would give rise to cyanohydrins < > OTHER REACTIONS OF ALDEHYDES AND KETONES Reactions of aldehydes include aldol condensation ,mixed aldol condensation ,cannizaro reactions, reamer tieman reaction and so on