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The electrophilic intermediate that attacks the benzene ring in the above reaction is
Option: 1
Option: 2
Option: 3
Option: 4
Answers (1)
As we learnt
Sulphonation -
Reagent H2SO4
- wherein
Fuming H2SO4 is conc. solution of dissolved sulphur trioxide in sulphuric acid also called alum
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