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Question

IUPAC name of CH3CH(OH)CH2CH2COOH

A
4-Hydroxypentanoic acid
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B
1-Carboxy-3-butanoic acid
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C
1-Carboxy-4-butanol
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D
4-Carboxy-2-butanol
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Solution

The correct option is A 4-Hydroxypentanoic acid
Carboxylic functional group is prior to hydroxyl group. Hence, the numbering of carbon chain will start from the carbon of carboxylic acid. Here, OH group is attached to the fourth carbon.
Therefore, the IUPAC name of given compound is 4-Hydroxypentanoic acid.

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