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1. |
What is the electrophile in the electrophilic substitution reaction of benzene using oleum and conc. H2SO4? |
A. | SO<sub>3</sub> |
B. | NO<sub>3</sub> |
C. | NO<sub>2</sub><sup>+</sup> |
D. | NO<sup>+</sup> |
Answer» B. NO<sub>3</sub> | |