22725.Which one of the following is the strongest base in aqueous solution?
Trimethylamine
Aniline
Dimethylamine
Methylamine
22726.An organic compound ‘A’ on reduction gives compound ‘B’, which on reaction with trichloromethane and caustic potash forms ‘C’. The compound ‘C’ on catalytic reduction gives N–methyl benzenamine, the compound ‘A’ is
Nitrobenzene
Nitromethane
Methanamine
Benzenamine
22727.An aromatic compound ‘A’ (C7H9N) on reacting with NaNO2/HCl at 0oC forms benzyl alcohol and nitrogen gas. The number of isomers possible for the compound ‘A’ is
5
7
3
6
22728.In the sequence of following reactions:
The starting compound ‘P’ is
The starting compound ‘P’ is
o–nitro toluene
m–nitro toluene
o–bromo toluene
p–nitro toluene
22729.The reaction of aniline with chloroform under alkaline conditions leads to the formation of
Phenyl cyanide
Phenyl isonitrile
Phenyl cyanate
Phenyl isocyanate
22730.The following reaction
is known by the name
is known by the name
Acetylation reaction
Schotten–Baumen reaction
Friedel–Craft’s reaction
Perkin’s reaction
22731.Replacement of diazonium group by fluorine is known as
Gattermann reaction
Sandmeyer reaction
Balz–Schiemann reaction
Etard reaction
22732.Presence of nitrogen in which among the following compounds can NOT be detected by Lassaigne method ?
Hydrazine
Aniline
p–Toluidine
Picric acid
22733.The correct sequence of reactions to be performed to convert benzene into m–bromoaniline is
nitration, reduction, bromination
bromination, nitration, reduction
nitration, bromination, reduction
reduction, nitration, bromination
22734.Electrolytic reduction of nitrobenzene in weakly acidic medium gives:
Aniline
p–Hydroxy aniline
N–Phenyl hydroxyl amine
Nitroso benzene