Following is a confirmatory test for aromatic primary amines. Identify reagent $(A)$ and $(B)$
- A$\mathrm{A}=\mathrm{HNO}_3 / \mathrm{H}_2 \mathrm{SO}_4$
- B$\mathrm{A}=\mathrm{NaNO}_2+\mathrm{HCl}, 0-5^{\circ} \mathrm{C}$
- C$\mathrm{A}=\mathrm{NaNO}_2+\mathrm{HCl}, 0-5^{\circ} \mathrm{C}$
- D$\mathrm{A}=\mathrm{NaNO}_2+\mathrm{HCl}, 0-5^{\circ} \mathrm{C}$
JEE MAIN 2024, Difficult
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