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Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B). B Cl ⊕ Θ A NH 2 N 2 Scarlet red dye NaOH

1. A = HNO 3 /H 2 SO 4 ; B = OH
2. A = NaNO 2 + HCl, 0 – 5 ° C; B = NH 2
3. A = NaNO 2 + HCl, 0 – 5°C; B = OH
4. A = NaNO 2 + HCl, 0 – 5° C; B = OH

Correct answer: A = NaNO 2 + HCl, 0 – 5° C; B = OH

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