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(B) Primary alcohols are oxidized to aldehydes and subsequently to carboxylic acids using strong oxidizing agents like $K_2Cr_2O_7$ and $H_2SO_4$. The

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$CH_3CH_2OH$

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(B) Primary alcohols are oxidized to aldehydes and subsequently to carboxylic acids using strong oxidizing agents like $K_2Cr_2O_7$ and $H_2SO_4$. The reaction sequence is: $CH_3CH_2OH$ $\xrightarrow{[O]} CH_3CHO$ $\xrightarrow{[O]} CH_3COOH$. Since the final product is acetic acid $(CH_3COOH)$,the starting compound $D$ must be ethanol $(CH_3CH_2OH)$.

An unknown compound $D$ is first oxidized to an aldehyde and then to acetic acid by a dilute solution of $K_2Cr_2O_7$ and $H_2SO_4$. The unknown compound $D$ is:

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