JEE Main 2024 Chemistry question
9.3 g of pure aniline upon diazotization followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume 100% yield/conversion) is g. (nearest integer)
Answer: 20
Solution
9.3 g = 0.1 mol aniline gives 0.1 mol of 4-hydroxyazobenzene (C₁₂H₁₀N₂O, 198 g mol⁻¹) = 19.8 g ≈ 20 g.