The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is :-

Question:

The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is :-

  1. (iv) $<$ (iii) $<$ (ii) $<$ (i)

  2. $(\mathrm{iv})<(\mathrm{i})<(\mathrm{ii})<(\mathrm{iii})$

  3. (iv) $<$ (i) $<$ (iii) $<$ (ii)

  4. $(\mathrm{i})<(\mathrm{ii})<(\mathrm{iii})<(\mathrm{iv})$

Correct Option: , 4

Solution:

For nucleophile substitution in aromatic halides

Correct order is :

(i) $<$ (ii) $<$ (iii) $<$ (iv)

More $\mathrm{No}$. of $\mathrm{NO}_{2}$ substituted aromatic halide, increase the rate of nucleophile substitution reaction in aromatic halides.

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