NEETChemistryHydrocarbonsMCQ+4 / −1
Increasing order of electrophilic substitution for following compounds
- AIV < I < II < III
- BIII < II < I < IV
- CI < IV < III < II
- DII < III < I < IV
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Correct answer: A
Among —CH3, —OCH3 and CF3,
CH3 and —OCH3 are electron donating groups. Hence, they activate the benzene ring. In these the order of activation is —OCH3 —CH3 while —CF3 group deactivates the benzene nucleus. So, it shows lower rate of electrophilic substitution on benzene ring. Thus, order of electrophilic substitution is :
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