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IUPAC name of  is (a) pent-1-en-3, 4-diol  (b) 3, 4-dihydroxypentene-1  (c) pent-4-en-2, 3-diol (d) 2, 3-dihydroxypent-4-ene

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IUPAC name of 2, 3-dihydroxypent-4-ene is

(a) pent-1-en-3, 4-diol 

(b) 3, 4-dihydroxypentene-1 

(c) pent-4-en-2, 3-diol

(d) 2, 3-dihydroxypent-4-ene

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Correct option is (c) pent-4-en-2, 3-diol

Compound is a dihydric alcohol, hence numbering should be done in the following order.

Compound is a dihydric alcohol

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