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Classification of Functional Groups

The presence ...

Question

The presence of which atom makes the given functional group easy to oxidise?

A

Carbon

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B

Oxygen

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C

Hydrogen

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D

Both A & C

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Solution

The correct option is C
Hydrogen

The presence of that hydrogen atom makes aldehydes very easy to oxidise. In aldehydes, the carbonyl group has a hydrogen atom attached to it together with either a second hydrogen atom or, a hydrocarbon group which might be an alkyl group or one containing a benzene ring.

An aldehyde differs from a ketone by having a hydrogen atom attached to the carbonyl group which makes the aldehydes very easy to oxidise. Aldehydes easily oxidise to either -oic or -oate forms.

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