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← JEE Main 2022 · 30 Jul · Shift 2
ChemistrySingle correct+4 / -1Question 47 of 90

JEE Main 2022 · 30 Jul · Shift 2, Chemistry question 47

Benzenediazonium chloride + X gives benzenediazonium tetrafluoroborate, which with Y (Cu, Δ) gives nitrobenzene (Major Product).

Consider the given chemical reaction, identify X and Y

Scheme: C6H5N2+Cl− + X → C6H5N2+BF4− → (Y, Cu, Δ) C6H5NO2 (major product).
Choose one option
Answer and worked solution

Official answer: B

Steps. HBF₄ gives the diazonium fluoroborate (X); heating with NaNO₂ and Cu (Y) replaces N₂⁺ by NO₂, giving nitrobenzene.

(B)