Under which of the following reaction conditions, aniline gives p-nitr

1.	Under which of the following reaction conditions, aniline gives p-nitro derivative as the major product?(i) Acetyl chloride/pyridine followed by reaction with conc. H2SO4 + conc. HNO3.(ii) Acetic anyhdride/pyridine followed by conc. H2SO4 + conc. HNO3.(iii) Dil. HCl followed by reaction with conc. H2SO4 + conc. HNO3.(iv) Reaction with conc. HNO3 + conc.H2SO4.
Answer» (i), (ii) (i) Acetyl chloride/pyridine followed by reaction with conc. H₂SO₄+ conc. HNO₃. (ii) Acetic anyhdride/pyridine followed by conc. H₂SO₄ + conc. HNO₃.

Under which of the following reaction conditions, aniline gives p-nitro derivative as the major product?(i) Acetyl chloride/pyridine followed by reaction with conc. H2SO4 + conc. HNO3.(ii) Acetic anyhdride/pyridine followed by conc. H2SO4 + conc. HNO3.(iii) Dil. HCl followed by reaction with conc. H2SO4 + conc. HNO3.(iv) Reaction with conc. HNO3 + conc.H2SO4.

Answer»

(i), (ii)

(i) Acetyl chloride/pyridine followed by reaction with conc. H₂SO₄+ conc. HNO₃.

(ii) Acetic anyhdride/pyridine followed by conc. H₂SO₄ + conc. HNO₃.