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  4. The decreasing order of reactivity of the following compounds towards nucleophilic substitution ( S N 2) is: <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/17c8bae8ce134e4b321f916ce1695690-.png />

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Q. The decreasing order of reactivity of the following compounds towards nucleophilic substitution $\left( S _{ N }2\right)$ is :
image

JEE MainJEE Main 2020Haloalkanes and Haloarenes

Solution:

Correct answer is (b) $(II) >( III )>( IV )>( I )$

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