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The product(s) obtained via oxymercuration `(HgSO_4 + H_2SO_4)` of 1-butyne would give
A. `CH_3CH_2-oversetoversetO(||)C-CH_3`
B. `CH_3CH_2CH_2-CHO`
C. `CH_3CH_2CHO+HCHO`
D. `CH_3CH_2COOH + HCOOH`

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Correct Answer - A
`underset"1-Butyne"(CH_3CH_2C-=CH+H_2O)underset"Mark. addn."overset(HgSO_4+H_2SO_4)to [CH_3CH_2-undersetunderset(OH)|C=CH_2]overset"Tautomerises"to CH_3CH_2-CO-CH_3`

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