A) ethylene glycol
B) ethylene oxide
C) formaldehyde
D) acetaldehyde
Correct Answer: C
Solution :
Acidic \[KMn{{O}_{4}}\]oxidised carbon-carbon double bond only. Hence, formaldehyde will be formed when ethene oxidised by acidic \[KMn{{O}_{4}}\]. \[{{H}_{2}}C=C{{H}_{2}}+2[O]\xrightarrow[KMn{{O}_{4}}]{Acidic}\underset{formaldehyde}{\mathop{2H-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-H}}\,\]
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