A) \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-O{{C}_{2}}{{H}_{5}}\]
B) \[{{C}_{2}}{{H}_{6}}\]
C) \[{{C}_{2}}{{H}_{4}}\]
D) \[{{C}_{2}}{{H}_{2}}\]
Correct Answer: A
Solution :
Ethyl alcohol on dehydration with conc. \[{{H}_{2}}S{{O}_{4}}\] at 170°C gives ethylene. \[\underset{\text{Ethyl alcohol}}{\mathop{C{{H}_{3}}C{{H}_{2}}OH}}\,\underset{\text{conc}\text{. }{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{170{}^\circ C}}}\,\underset{\text{Ethylene}}{\mathop{C{{H}_{2}}=C{{H}_{2}}}}\,+{{H}_{2}}O\]
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