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IIT JEE Organic Compounds Containing Nitrogen
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1. Schiffs base on reduction give
sec. amine
aniline
tert. amine
p-amine
2. Which compound is obtained when ethyl isocyanate is hydrolysed?
Propionamide
Ethyl cyanide
Ethyl acetate
Ethyl amine
3. Which of the following is insoluble both in acid and water but soluble in aq caustic alkali?
Benzene sulphuric acid
N N dimethyl amino methane
Sulphanilic acid
Aniline
4. Which of the following compounds is expected to be maximum basic in nature?
Methyl amine
Ammonia
Ethyl amine
Aniline
5. Aniline black is obtained by the action of aniline with
sodium dichromate and sulphuric acid
conc. hydrochloric acid
conc. nitric acid
water
6. Which of the following cannot show tautomerism ?
2-Methyl-2-nitropropane
2-Nitropropane
1-Nitropropane
Vinyl alcohol.
7. Which of the following is the most basic?
Esters
Ketones
Alcohol
Amines
8. Tertiary nitroalkanes cannot tautomerise because they
are not stable
are strong base
do not contain labite hydrogen
All the above
9. Urea the first organic compound was synthesised in the laboratory by
Hofmann
Wohler
Thomson
Riemer
10. Shape of amines is
planar triangular
square planar
tetrahedral
pyramidal
11. Aniline is purified by
smelting
distillation with pressure
sublimation
steam distillation
12. Which of the following halides cannot be the starting material for preparation of p amines by Gabriel phthalaide reaction?
Phenyl chloride
2 chloroethanoic acid
Benzyl chloride
Vinyl alcohol.
13. When chloroform primary amine and alcoholic KOH react a bad smelling compound is formed which is
alkyl isocyanate
alkyl isocyanide
alkyl amine
alkyl cyanide
14. Which of the following is a carcinogen?
Ethyl amine
N-nitroso amine
Aniline
Benzenediazonium chloride
15. Propionamide when heated with bromine and NaOH givesPropyl amine
Ethyl amine
Propyl amine
Diethyl amine
None of these
16. Aniline is normally purified by
vacuum distillation
steam distillation
simple distillation
pressure distillation
17. Schiffs bax is obtaind by the action of
p-amines with aldehydes
p-amines with acid anhydrides
p-amines with acid chloride
All the above
18. Heisenberg test can be used to distinguish between
primary amines secondary amines and tertiary amine
primary amines and secondary amines
primary amines and tertiary amines
All the above
19. Amino group in aniline is
ortho and para directing and activating
ortho and para directing
ortho directing
None of above
20. The reaction of amines with methyl iodide leading to the formation of quarternary ammonium salts is called
Hofmanns reaction
Exhaustive methylation
Benzoylation
Kolbes reaction
21. Aniline condenses with benzaldehyde to give
N benzoyl aniline
benzoyl aniline
benzal aniline
N benzal aniline
22. Which of the following is absorbed by HCl?
Methyl alcohol
Ethanamine
Acetylene
Ethylene
23. ethyl amine is
basic
neutral
amphoteric
acidic
24. Which of the following will give a primary amine upon hydrolysis?
Alkyl cyanide
Alkyl isocyanide
Oxime
None of these
25. Diazonium salts are used in the solutions in which they are prepared because they arecorrosive
not obtained in the solid state
explosive
poisonous
Vinyl alcohol.
26. Nitrobenzene when reduced with Sn and HCl gives
hydrazobenzene
azoxy benzene
aniline
None of these
27. N-nitrosoamine when warmed with phenol and conc. sulphuric acid gives green colouration. The amine is
quaternary salt
secondary amine
tert. amine
Vinyl alcohol.
28. Acid amides upon treatment with KOH and bromine give amines. The reaction is called
Hofmann bromamide reaction
Gabriel phthalimide reaction
Rosenmunds reactions
Riemers reaction
29. Aniline reacts with dl. HCl and HONO at 00C to form
diazo compound
azo compound
nitro compound
benzene
30. Methyl carbylamine is treated with ozone the product formed is
Formic acid
Formic acid and methyl amine
Methyl isocyanate
Formaldimine.
31. In order to produce ethyl isothiocyanate which of the following reagents are required ?
Ethyl amine and sulpyur
Ethanamide and sulpyur
Ethyl carbylamine and sulphur
Ethyl cyanide and sulphur.
32. Which of the following reagent can be used to convert benzene diazonium chloride to benzene?
Phosphorus acid
Phosphoric acid
Hypophosphoric acid
Metaphosphoric acid.
33. Which is least reactive to nitratio ?
Benzene
Nitrobenzene
Chlorobenzene
Aniline.
34. Which of the following amine will not react with benzoyl chloride ?
isopropyl amine
p-toludine
N N-Diethyl aniline
N-methyl aniline.
35. Acetamide is less basic than aniline because
it is an aliphatic compound
of greater elcetron withdrawing effect of adjacent carbonyl group
its molecular mass is low
of intermolecular H-bonding.
36. Tertiary nitroalkane cannot tautomerise because
their tautomer forms are highly unstable
it do not contain any multiple bond
it do not have labile H atom
it is not basic in nature.
37. Which of the following combinations will not yield secondary amine?
Reduction of aldoximes
Reduction of carbylamines
Reduction of Schiffs bases
Reduction of N-Methylethanamide.
38. The main product of bromination of acetanilide in glacial acetic acid is
o-bromoaniline
p-bromoaniline
p-bromoacetanilide
2 4 6-tribromoacetanilide.
39. Secondary amine can be produced by
Reduction of isocyanides
Reduction of amides
Reduction of aldehydes
Reduction of nitrobenzene
40. The main product of reduction of nitrobenzene with lithium aluminium hydride is
Azoxybebzene
Aniline
Azobenzene
Diazonium salt.
41. Benzoyl chloride reacts with benzenamine in the presence of a base to form
Benzamide
Hydrobenzamide
N-Phenylethanamide
N-Phenylbenzamide.
42. An organic compound A reacts with nitrous acid to form N-methyl-N-nitrosoethanamine. A can be obtained by reducation of
Propanenitrile
Acrylonitrile
Methylisocyanate
Ethylisocyanide.
43. Which of the following on reaction with chloroform produces carbylamine?
p-amine
sec-amine
tert amine
All of the above.
44. Which of the following will not give dinitrogen gas with nitrous acid?
Propanamine
Methanamine
Trimethylamine
Isopropylamine.
45. Further nitration of nitrobenzene by treatment with nitrating mixture priduces
1 3-Dinitrobenzene
1 4-Dinitrobenzene
1 3 5-Trinitrobenzene
no reaction will occur.
46. Which of the following species will give methyl orange by reaction with diazonium salt of sodium p-aminobenzene sulphonate ?aniline
vacuum distillation
N N-Dimethylaniline
m-nitro aniline
p-Cresol.
47. The main product of the reaction of ethyl bromide and alcoholic of silver nitrite is
ethyl cyanide
nitroethane
ethene
ethyl nitrite.
48. Which of the following exists as Zwitter ion structure?
p-aminobenzene sulphonic acid
p-cresol
picric acid
salicylic acid.
49. Which of the following amine is stronger base as compared to ammonia?
Cyclohexylamine
Benzenamine
Diphenyl amine
Triphenyl amine.
50. Which of the following structure can exist as Zwitter isn?
p-amino benzoic acid
Benzene diazonium chloride
o-amino benzene sulphonate ion
Benzene diazonium hydrogen sulphate.
51. Sodalime decarboxylation of sodiumglycinate produces
Glycine
Ethanoic acid
Methylamine
Alanin.
52. Which of following substance is insoluble in water but gives crystalline precipitate with hydrochloric acid ?
Methyl amine
Acetamide
Aniline
Dimethyl amine.
53. When an aqueous solution f ethylamine and iron (III) chloride are mixed
a colourless solution is formed
brown precipitate is formed
violet coloured solution is produced
black precipitate is formed.
54. Ammonia and phthalic acid react to produce
Phthalamide
o-Amino benzoic acid
0-phenylenediamine
Phthalimide.
55. One mole of ethlamine when reacts with nitrous acid will produce dinitrogen gas equal to
1 L at S.T.P.
22.4 L at S.T.P.
11.2 L at S.T.P.
unpredictable.
56. Sweet spiritof nitre is
Ethyl nitrite
Nitrobenzene
Chlorobenzene
Nitromethane.
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