A .  
Aniline reacts with bromine at room temperature to give a white precipitate of 2,4,6 - tribromo aniline
B .  
Acetanilide is less reactive towards electrophilic aromatic substitution reaction than aniline
C .  
Aniline does not undergo Friedel - crafts reaction, due to salt formation with catalyst aluminium chloride
D .  
Aniline reacts with Conc H2SO4 gives anilinium hydrogen sulphate which on heating with sulphuric acid at 453 - 473 K gives o - amino benzene sulphonic acid only
Answer: Option D : D
Sulphanilic acid is formed which can present as Zwittter ion
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