A) Hydrolysis by dil. \[{{H}_{2}}S{{O}_{4}}\]
B) Hydration of alkene by alkaline \[KMn{{O}_{4}}\]
C) Hydrolysis by water vapours and conc. \[{{H}_{2}}S{{O}_{4}}\]
D) Hydration of alkene by aqueous KOH
Correct Answer: B
Solution :
\[C{{H}_{2}}=C{{H}_{2}}+{{H}_{2}}O+[O]\xrightarrow{\text{alk}.KMn{{O}_{4}}}\underset{\text{Glycol}}{\mathop{\underset{OH\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,-\underset{OH\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,}}\,\] \[\underset{\text{Ethene}}{\mathop{C{{H}_{2}}=C{{H}_{2}}}}\,+{{H}_{2}}O\xrightarrow{\text{Conc}\text{.}{{H}_{2}}S{{O}_{4}}}\underset{\text{Ethanol}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-OH}}\,\]
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