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In the following reaction :
`C_2H_2 underset(HgSO_4//H_2SO_4)overset(H_2O)to X hArr CH_3CHO`
What is X ?
A. `CH_3CH_2OH`
B. `CH_3-O-CH_3`
C. `CH_3CH_2CHO`
D. `CH_2=CHOH`

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Best answer
Correct Answer - D
`underset"Acetylene"(HC-=CH)underset(HgSO_4 // H_2SO_4)overset(H_2O)to underset"Vinyl alcohol (X)"(CH_2=CHOH) hArr underset"Acetaldehyde"(CH_3CHO)`

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