Choose the correct order of nucleophilic substitution reaction :

(I) < (II) < (III)

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(II) < (I) < (III)

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(III) < (II) < (I)

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(I) < (III) < (II)

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Solution

The correct option is C (III) < (II) < (I)
Higher the no. of +I group attached to the ring lower is its reactivity towards nucleophilic substitution. As it makes the compounds less electron deficient thus lowers the reactivity.
Hence the correct order of the reactivity towards nucleophilic substitution is as shown in the figure.
Option C is correct.

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In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution.

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In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution.

(a) (i) < (ii) < (iii) (b) (i) < (iii) < (ii)

s_{p^{3}}

The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

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