Multiple Choice QuestionsWhich of the following statements about primary amines is false?
Alkyl amine are stronger bases than aryl amines
Alkyl amines reacts with nitrous acid to produce alcohols
Aryl amines react with nitrous acid to produce phenols
Alkyl amines are stronger base than ammonia
Which one of the following on reduction with lithium aluminium hydride yield a secondary amine?
Nitroethane
Methylisocyanide
Acetamide
Acetamide
Which of the following is more basic than aniline?
Diphenylamine
Triphenylamine
p-nitroaniline
p-nitroaniline
D.
p-nitroaniline
Benzylamine C6H5 - NH2 is more basic than aniline because benzyl group C6H5CH2 is electron donating group due to +I effect. So, it is able to increase the electron density of N of -NH2 group. Thus due to higher electron density rate of donation of a free pair of electron is increased i.e, basic character is higher. Phenyl and nitro group are electron attractive groups. so they are able to decrease the electron density of N of NH2 group. Hence, they are less basic with aniline.
The correct increasing order of basic strength for the following compounds is 
II < III < I
III < I < II
III < II < I
III < II < I
Which of the following reactions is appropriate for converting acetamide to methanamine?
Carbylamine reaction
Hoffmann hypobromamide reaction
Stephens reaction
Stephens reaction
The correct order of N-compounds in its decreasing order of oxidation states is
HNO3, NH4Cl, NO, N2
HNO3, NO,NH4Cl, N2
HNO3, NO, N2, NH4Cl
NH4Cl, N2, NO, HNO3
Which of the following compounds can form a zwitter ion?
Aniline
Acetanilide
Glycine
Benzoic acid
Nitration of aniline in strong acidic medium also gives m-nitroaniline because
Inspite of substituents nitro group always goes to only m-position.
In electrophilic substitution reactions amino group is meta directive.
In acidic (strong) medium aniline is present as anilinium ion.
In absence of substituents nitro group always goes to m-position.
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