A) 2-isobutyl butanal
B) 2-ethyl-3-methyl pentanal
C) 3-methyl-4-ethyl pentanal
D) 2, 3-diethyl butanal
Correct Answer: B
Solution :
\[\underset{2-ethyl-3-methyl\text{ }pentanal}{\mathop{\overset{5}{\mathop{C}}\,{{H}_{3}}-\overset{4}{\mathop{C}}\,{{H}_{2}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{\overset{3}{\mathop{C}}\,H}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{2}}-C{{H}_{3}} \end{smallmatrix}}{\mathop{\overset{2}{\mathop{C}}\,H-\overset{1}{\mathop{C}}\,HO}}\,}}\,\]
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