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From Alcohols

(a) By Direct oxidation:Aldehydes are prepared by oxidation of 1° alcohols. Refer to Alcohols

(b) By catalytic dehydrogenation

From Acid chlorides

Aldehydes are prepared from acid chlorides by reaction with H2 in the presence of palladium catalyst supported on BaSO4.

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Class 12 Chemistry Aldehydes, Ketones and Carboxylic Acids All Topic Notes Class 12 Chemistry All Chapters Notes

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