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Question

The compound having the molecular formula $C_{2} H_{4} O_{2}$ is a :
ketone
acid
aldehyde
ether

A

ether

B

ketone

C

aldehyde

D

acid

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Solution

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Carboxylic acid can be recognised by using general formula
$C_{n} H_{2} n O_{2} .$ Here it is an acid named acetic acid.
Acetic acid, Ethanoic acid, ${C H}_{3} C O O H$

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