Arrange decreasing order of reactivity of these compounds for nucleophilic substitution reaction. $\left( {\text{I}} \right)\,\,\,C{H_3}C{H_2} - O - \begin{array}{*{20}{c}} O \\ {||} \\ S \\ {||} \\ O \end{array} - C{F_3}$ $\left( {{\text{II}}} \right)\,\,\,C{H_3} - C{H_2} - OTs$ $\left( {{\text{III}}} \right)\,\,\,C{H_3} - \mathop {CH}\limits_{\begin{array}{*{20}{c}} | \\ {OH} \end{array}} - C{H_3}$ $\left( {{\text{IV}}} \right)\,\,\,C{H_3} - \mathop {CH}\limits_{\begin{array}{*{20}{c}} | \\ {{C_6}{H_5}} \end{array}} - OH$

NEET UG CHEMISTRY MCQ: HALOALKANES AND HALO ARENES

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Arrange decreasing order of reactivity of these compounds for nucleophilic substitution reaction.

\left( {\text{I}} \right)\,\,\,C{H_3}C{H_2} - O - \begin{array}{cccccccccccccccccccc} O \\ {||} \\ S \\ {||} \\ O \end{array} - C{F_3}

\left( {{\text{II}}} \right)\,\,\,C{H_3} - C{H_2} - OTs

\left( {{\text{III}}} \right)\,\,\,C{H_3} - \mathop {CH}\limits_{\begin{array}{cccccccccccccccccccc} | \\ {OH} \end{array}} - C{H_3}

\left( {{\text{IV}}} \right)\,\,\,C{H_3} - \mathop {CH}\limits_{\begin{array}{cccccccccccccccccccc} | \\ {{C_6}{H_5}} \end{array}} - OH

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Correct option: D

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III

Option D is correct because the reactivity order in nucleophilic substitution depends on the leaving group ability and steric hindrance. I and II have better leaving groups than III and IV, and I is better than II.

NEET UG CHEMISTRY MCQ: HALOALKANES AND HALO ARENES

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