laboursonline – MCQs, Mock Tests | IIT JEE IIT JEE Organic Compounds Containing Nitrogen

Schiffs base on reduction give

1. sec. amine
2. aniline
3. tert. amine
4. p-amine

✅ Correct Answer: 1

Which compound is obtained when ethyl isocyanate is hydrolysed?

1. Propionamide
2. Ethyl cyanide
3. Ethyl acetate
4. Ethyl amine

✅ Correct Answer: 1

Which of the following is insoluble both in acid and water but soluble in aq caustic alkali?

1. Benzene sulphuric acid
2. N N dimethyl amino methane
3. Sulphanilic acid
4. Aniline

✅ Correct Answer: 3

Which of the following compounds is expected to be maximum basic in nature?

1. Methyl amine
2. Ammonia
3. Ethyl amine
4. Aniline

✅ Correct Answer: 1

Aniline black is obtained by the action of aniline with

1. sodium dichromate and sulphuric acid
2. conc. hydrochloric acid
3. conc. nitric acid
4. water

✅ Correct Answer: 1

Which of the following cannot show tautomerism ?

1. 2-Methyl-2-nitropropane
2. 2-Nitropropane
3. 1-Nitropropane
4. Vinyl alcohol.

✅ Correct Answer: 2

Which of the following is the most basic?

1. Esters
2. Ketones
3. Alcohol
4. Amines

✅ Correct Answer: 4

Tertiary nitroalkanes cannot tautomerise because they

1. are not stable
2. are strong base
3. do not contain labite hydrogen
4. All the above

✅ Correct Answer: 3

Urea the first organic compound was synthesised in the laboratory by

1. Hofmann
2. Wohler
3. Thomson
4. Riemer

✅ Correct Answer: 2

Shape of amines is

1. planar triangular
2. square planar
3. tetrahedral
4. pyramidal

✅ Correct Answer: 4

Aniline is purified by

1. smelting
2. distillation with pressure
3. sublimation
4. steam distillation

✅ Correct Answer: 3

Which of the following halides cannot be the starting material for preparation of p amines by Gabriel phthalaide reaction?

1. Phenyl chloride
2. 2 chloroethanoic acid
3. Benzyl chloride
4. Vinyl alcohol.

✅ Correct Answer: 1

When chloroform primary amine and alcoholic KOH react a bad smelling compound is formed which is

1. alkyl isocyanate
2. alkyl isocyanide
3. alkyl amine
4. alkyl cyanide

✅ Correct Answer: 2

Which of the following is a carcinogen?

1. Ethyl amine
2. N-nitroso amine
3. Aniline
4. Benzenediazonium chloride

✅ Correct Answer: 2

Propionamide when heated with bromine and NaOH givesPropyl amine

1. Ethyl amine
2. Propyl amine
3. Diethyl amine
4. None of these

✅ Correct Answer: 1

Aniline is normally purified by

1. vacuum distillation
2. steam distillation
3. simple distillation
4. pressure distillation

✅ Correct Answer: 2

Schiffs bax is obtaind by the action of

1. p-amines with aldehydes
2. p-amines with acid anhydrides
3. p-amines with acid chloride
4. All the above

✅ Correct Answer: 1

Heisenberg test can be used to distinguish between

1. primary amines secondary amines and tertiary amine
2. primary amines and secondary amines
3. primary amines and tertiary amines
4. All the above

✅ Correct Answer: 4

Amino group in aniline is

1. ortho and para directing and activating
2. ortho and para directing
3. ortho directing
4. None of above

✅ Correct Answer: 1

The reaction of amines with methyl iodide leading to the formation of quarternary ammonium salts is called

1. Hofmanns reaction
2. Exhaustive methylation
3. Benzoylation
4. Kolbes reaction

✅ Correct Answer: 1

Aniline condenses with benzaldehyde to give

1. N benzoyl aniline
2. benzoyl aniline
3. benzal aniline
4. N benzal aniline

✅ Correct Answer: 3

Which of the following is absorbed by HCl?

1. Methyl alcohol
2. Ethanamine
3. Acetylene
4. Ethylene

✅ Correct Answer: 2

ethyl amine is

1. basic
2. neutral
3. amphoteric
4. acidic

✅ Correct Answer: 1

Which of the following will give a primary amine upon hydrolysis?

1. Alkyl cyanide
2. Alkyl isocyanide
3. Oxime
4. None of these

✅ Correct Answer: 2

Diazonium salts are used in the solutions in which they are prepared because they arecorrosive

1. not obtained in the solid state
2. explosive
3. poisonous
4. Vinyl alcohol.

✅ Correct Answer: 2

Nitrobenzene when reduced with Sn and HCl gives

1. hydrazobenzene
2. azoxy benzene
3. aniline
4. None of these

✅ Correct Answer: 3

N-nitrosoamine when warmed with phenol and conc. sulphuric acid gives green colouration. The amine is

1. quaternary salt
2. secondary amine
3. tert. amine
4. Vinyl alcohol.

✅ Correct Answer: 2

Acid amides upon treatment with KOH and bromine give amines. The reaction is called

1. Hofmann bromamide reaction
2. Gabriel phthalimide reaction
3. Rosenmunds reactions
4. Riemers reaction

✅ Correct Answer: 1

Aniline reacts with dl. HCl and HONO at 00C to form

1. diazo compound
2. azo compound
3. nitro compound
4. benzene

✅ Correct Answer: 1

Methyl carbylamine is treated with ozone the product formed is

1. Formic acid
2. Formic acid and methyl amine
3. Methyl isocyanate
4. Formaldimine.

✅ Correct Answer: 3

In order to produce ethyl isothiocyanate which of the following reagents are required ?

1. Ethyl amine and sulpyur
2. Ethanamide and sulpyur
3. Ethyl carbylamine and sulphur
4. Ethyl cyanide and sulphur.

✅ Correct Answer: 3

Which of the following reagent can be used to convert benzene diazonium chloride to benzene?

1. Phosphorus acid
2. Phosphoric acid
3. Hypophosphoric acid
4. Metaphosphoric acid.

✅ Correct Answer: 3

Which is least reactive to nitratio ?

1. Benzene
2. Nitrobenzene
3. Chlorobenzene
4. Aniline.

✅ Correct Answer: 2

Which of the following amine will not react with benzoyl chloride ?

1. isopropyl amine
2. p-toludine
3. N N-Diethyl aniline
4. N-methyl aniline.

✅ Correct Answer: 3

Acetamide is less basic than aniline because

1. it is an aliphatic compound
2. of greater elcetron withdrawing effect of adjacent carbonyl group
3. its molecular mass is low
4. of intermolecular H-bonding.

✅ Correct Answer: 2

Tertiary nitroalkane cannot tautomerise because

1. their tautomer forms are highly unstable
2. it do not contain any multiple bond
3. it do not have labile H atom
4. it is not basic in nature.

✅ Correct Answer: 3

Which of the following combinations will not yield secondary amine?

1. Reduction of aldoximes
2. Reduction of carbylamines
3. Reduction of Schiffs bases
4. Reduction of N-Methylethanamide.

✅ Correct Answer: 1

The main product of bromination of acetanilide in glacial acetic acid is

1. o-bromoaniline
2. p-bromoaniline
3. p-bromoacetanilide
4. 2 4 6-tribromoacetanilide.

✅ Correct Answer: 3

Secondary amine can be produced by

1. Reduction of isocyanides
2. Reduction of amides
3. Reduction of aldehydes
4. Reduction of nitrobenzene

✅ Correct Answer: 1

The main product of reduction of nitrobenzene with lithium aluminium hydride is

1. Azoxybebzene
2. Aniline
3. Azobenzene
4. Diazonium salt.

✅ Correct Answer: 3

Benzoyl chloride reacts with benzenamine in the presence of a base to form

1. Benzamide
2. Hydrobenzamide
3. N-Phenylethanamide
4. N-Phenylbenzamide.

✅ Correct Answer: 4

An organic compound A reacts with nitrous acid to form N-methyl-N-nitrosoethanamine. A can be obtained by reducation of

1. Propanenitrile
2. Acrylonitrile
3. Methylisocyanate
4. Ethylisocyanide.

✅ Correct Answer: 4

Which of the following on reaction with chloroform produces carbylamine?

1. p-amine
2. sec-amine
3. tert amine
4. All of the above.

✅ Correct Answer: 1

Which of the following will not give dinitrogen gas with nitrous acid?

1. Propanamine
2. Methanamine
3. Trimethylamine
4. Isopropylamine.

✅ Correct Answer: 3

Further nitration of nitrobenzene by treatment with nitrating mixture priduces

1. 1 3-Dinitrobenzene
2. 1 4-Dinitrobenzene
3. 1 3 5-Trinitrobenzene
4. no reaction will occur.

✅ Correct Answer: 1

Which of the following species will give methyl orange by reaction with diazonium salt of sodium p-aminobenzene sulphonate ?aniline

1. vacuum distillation
2. N N-Dimethylaniline
3. m-nitro aniline
4. p-Cresol.

✅ Correct Answer: 2

The main product of the reaction of ethyl bromide and alcoholic of silver nitrite is

1. ethyl cyanide
2. nitroethane
3. ethene
4. ethyl nitrite.

✅ Correct Answer: 2

Which of the following exists as Zwitter ion structure?

1. p-aminobenzene sulphonic acid
2. p-cresol
3. picric acid
4. salicylic acid.

✅ Correct Answer: 1

Which of the following amine is stronger base as compared to ammonia?

1. Cyclohexylamine
2. Benzenamine
3. Diphenyl amine
4. Triphenyl amine.

✅ Correct Answer: 1

Which of the following structure can exist as Zwitter isn?

1. p-amino benzoic acid
2. Benzene diazonium chloride
3. o-amino benzene sulphonate ion
4. Benzene diazonium hydrogen sulphate.

✅ Correct Answer: 1

Sodalime decarboxylation of sodiumglycinate produces

1. Glycine
2. Ethanoic acid
3. Methylamine
4. Alanin.

✅ Correct Answer: 3

Which of following substance is insoluble in water but gives crystalline precipitate with hydrochloric acid ?

1. Methyl amine
2. Acetamide
3. Aniline
4. Dimethyl amine.

✅ Correct Answer: 3

When an aqueous solution f ethylamine and iron (III) chloride are mixed

1. a colourless solution is formed
2. brown precipitate is formed
3. violet coloured solution is produced
4. black precipitate is formed.

✅ Correct Answer: 2

Ammonia and phthalic acid react to produce

1. Phthalamide
2. o-Amino benzoic acid
3. 0-phenylenediamine
4. Phthalimide.

✅ Correct Answer: 4

One mole of ethlamine when reacts with nitrous acid will produce dinitrogen gas equal to

1. 1 L at S.T.P.
2. 22.4 L at S.T.P.
3. 11.2 L at S.T.P.
4. unpredictable.

✅ Correct Answer: 3

Sweet spiritof nitre is

1. Ethyl nitrite
2. Nitrobenzene
3. Chlorobenzene
4. Nitromethane.

✅ Correct Answer: 1