| I. \[HOC{{H}_{2}}C{{H}_{2}}OH\], |
| II. \[C{{H}_{3}}CHOHCHOHC{{H}_{3}}\] |
| III. \[{{(C{{H}_{3}})}_{2}}COHCOH\,{{(C{{H}_{3}})}_{2}}\] |
A) I > II > III
B) ll > I > III
C) III > II > I
D) I > III = II
Correct Answer: A
Solution :
Rate of oxidation depends upon steric hinderance. Greater the steric hinderance the slower is the oxidation. Thus, the correct order is \[\underset{(I)}{\mathop{\begin{matrix} C{{H}_{2}}OH \\ \begin{align} & | \\ & C{{H}_{2}}OH \\ \end{align} \\ \end{matrix}}}\,>\underset{(II)}{\mathop{\begin{matrix} C{{H}_{2}}CHOH \\ \begin{align} & | \\ & C{{H}_{3}}CHOH \\ \end{align} \\ \end{matrix}}}\,>\underset{(III)}{\mathop{\begin{matrix} {{(C{{H}_{3}})}_{2}}COH \\ \begin{align} & | \\ & {{(C{{H}_{3}})}_{2}}COH \\ \end{align} \\ \end{matrix}}}\,\]
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