A) functional
B) chain
C) positional
D) stereo
Correct Answer: B
Solution :
2-pentanone and 3-methyl-2-butanone are chain isomers because they differ in carbon skeleton. \[\underset{2-pentanone}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COC{{H}_{3}}}}\,\] \[\underset{3-methyl-2-butanone}{\mathop{\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C{{H}_{3}}CH.COC{{H}_{3}}}}\,}}\,\]
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