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Q. The compound obtained by the reduction of propionaldehyde by amalgamated zinc and concentrated $HCl$ is

Aldehydes Ketones and Carboxylic Acids

Solution:

$CH_3CH_2CHO+4H \xrightarrow[{HCI}]{Zn/Hg} CH_3CH_2CH_3 + H_2O$
This reaction is called Clemmensen’s reduction