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
C.
Aryl amines react with nitrous acid to produce phenols
i) The presence of electron withdrawing substituent decrease the basicity while the presence of electron releasing substituent like, -CH3 - C2H5 etc increases the acidity.
ii) HNO2 converts - NH2 group of an aliphatic amine into - OH while that of aromatic amines into - N =NCl.
Since phneyl group is a electron withdrawing group, it decreases the basicity. Alkyl group, on the other hand, being electron releasing, increases the basicity. Thus, alkyl amines are more basic as compared to arylamines as well as ammonia.
Thus, HNO2 (nitrous acid ) converts alkyl amines to alcohols. But,
Thus, HNO2 does not convert aryl amines into phenol.
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
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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