| Arrange the following compounds in decreasing orders of rate of exchange of \[{{O}^{_{18}}}\] with \[{{H}_{2}}{{O}^{18}}\]- |
| (X) \[CC{{l}_{3}}CHO\] |
| (Y) \[C{{H}_{3}}CHO\] |
| (Z) \[C{{H}_{3}}COC{{H}_{3}}\] |
| (W) \[CB{{r}_{3}}CHO\] |
A) \[W>Z>X>Y\]
B) \[X>W>Y>Z\]
C) \[X>Y>Z>W\]
D) \[W>Z>Y>X\]
Correct Answer: B
Solution :
[B] \[CC{{l}_{3}}-\underset{\underset{o}{\mathop{\parallel }}\,}{\mathop{C}}\,-H>CB{{r}_{3}}-\underset{\underset{o}{\mathop{\parallel }}\,}{\mathop{C}}\,-H>C{{H}_{3}}-\underset{\underset{o}{\mathop{\parallel }}\,}{\mathop{C}}\,-H>C{{H}_{3}}-\underset{\underset{o}{\mathop{\parallel }}\,}{\mathop{C}}\,-C{{H}_{3}}\]
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