A) butan-1, 2-diol
B) butan-1-ol
C) butan-2-ol
D) butan-2-one
Correct Answer: D
Solution :
\[\underset{1-butyne}{\mathop{C{{H}_{3}}C{{H}_{2}}C\equiv CH}}\,+{{H}_{2}}O\xrightarrow{HgS{{O}_{4}}/{{H}_{2}}S{{O}_{4}}}\] \[C{{H}_{3}}C{{H}_{2}}\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\xrightarrow{+{{H}_{2}}O}\underset{(unstable)}{\mathop{C{{H}_{3}}C{{H}_{2}}-\underset{OH}{\mathop{\underset{|}{\mathop{\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}}}\,\] \[\xrightarrow[-{{H}_{2}}O]{}\underset{\text{butan}\,\text{-2-one}}{\mathop{C{{H}_{3}}C{{H}_{2}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}}}\,\]
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