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JEE CHEMISTRY MCQ: ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

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(i)   C6H5−CO∣∣−C6H5\left( {\text{i}} \right)\,\,\,{{\text{C}}_6}{{\text{H}}_5} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {{\text{C}}_6}{{\text{H}}_5}

(ii) C6H5−CHO\mathrm{C}_6 \mathrm{H}_5-\mathrm{CHO}

(iii) p−CH3−C6H4−CHOp-\mathrm{CH}_3-\mathrm{C}_6 \mathrm{H}_4-\mathrm{CHO}

(iv) p−CH3O−C6H4−CHOp-\mathrm{CH}_3 \mathrm{O}-\mathrm{C}_6 \mathrm{H}_4-\mathrm{CHO}

The correct order for nucleophilic addition reaction is:
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Correct option: C
ii >> iii >> iv >> i
Option C (ii > iii > iv > i) is correct because the reactivity towards nucleophilic addition decreases with increased steric hindrance and electron-donating groups.

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