Conc.HNO ₃/ Conc.H ₂ SO ₄, 323-333 K A Fe/HCl B NaNO ₂/ HCl , 273 K C C ₂ H ₅ OH , - N ₂ + D + HCl Organic compound 'D' is

Step-by-step solution

Benzene undergoes nitration with concentrated HNO ₃ and concentrated H ₂ SO ₄ at 323-333 K to form nitrobenzene (A). C ₆ H ₆ Conc. HNO ₃ / Conc. H ₂ SO ₄ C ₆ H ₅ NO ₂ (A) Nitrobenzene (A) is reduced by Fe/HCl to yield aniline (B). C ₆ H ₅ NO ₂ Fe/HCl C ₆ H ₅ NH ₂ (B) Aniline (B) undergoes diazotization with NaNO ₂ and HCl at 273 K to form benzene diazonium chloride (C). C ₆ H ₅ NH ₂ NaNO ₂/ HCl , 273 K C ₆ H ₅ N ₂^+ Cl ^- (C) Benzene diazonium chloride (C) is reduced by ethanol ( C ₂ H ₅ OH ) to benzene. In this pr