Alcohols Phenols And Ethers Question 287
Question: Which of the following vapours passed over heated copper to form acetone
[BIT 1992]
Options:
A) $ H_3C-CH_2-CH_2OH $
B) $ \underset{\underset{OH}{\mathop{|}}}{\mathop{CH_3-CH-CH_3}} $
C) $ \begin{matrix} CH_3 & - & {} & {} & {} \\ CH_3 & > & C & - & OH \\ CH_3 & {} & {} & {} & {} \\ \end{matrix} $
D) $ CH_2=CH-CH_2OH $
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Answer:
Correct Answer: B
Solution:
Secondary alcohol on dehydrogenation gives acetone $ CH_3-\underset{\underset{OH}{\mathop{|}}}{\mathop{CH}}-CH_3\underset{300^{0}C}{\mathop{\xrightarrow{Cu}}}CH_3-\underset{\underset{O}{\mathop{||}}}{\mathop{C}}-CH_3+H_2 $
BETA
