Consider the following nucleophilic groups : $\text{I. } -\mathrm{O}-\mathrm{SO}_2-\mathrm{C}_6 \mathrm{H}_5$ ${\text{II}}.\,\, - {\text{O}} - \mathop {\text{C}}\limits^{\begin{array}{*{20}{c}} {\text{O}} \\ {||} \end{array}} - {\text{C}}{{\text{H}}_3}$ $\text{III. }-{Cl}$ $\text{IV. }-\mathrm{OCH}_3$ What is the correct order of leaving power of the above nucleophilic substitution reaction?

$\text{I}>\text{III}>\text{II}>\text{IV}$

$\text{I}>\text{II}>\text{IV}>\text{III}$

$\text{I}>\text{II}>\text{III}>\text{IV}$

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NEET UG CHEMISTRY MCQ: ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

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Consider the following nucleophilic groups :

\text{I. } -\mathrm{O}-\mathrm{SO}_2-\mathrm{C}_6 \mathrm{H}_5

{\text{II}}.\,\, - {\text{O}} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {\text{C}}{{\text{H}}_3}

\text{III. }-{Cl}

\text{IV. }-\mathrm{OCH}_3

What is the correct order of leaving power of the above nucleophilic substitution reaction?

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Correct option: C

\text{IV}>\text{III}>\text{II}>\text{I}

Option D (I > II > III > IV) is incorrect. The correct order of leaving group ability is I > II > III > IV, based on the stability of the leaving group after departure.

NEET UG CHEMISTRY MCQ: ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

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