Which electrophile is used in aromatic nitration? NO⁺, NO₂⁻ , NO₂⁺, None of these
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Question context
This question is part of ⚗️ Chemical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the FPSC Federal Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.