NEET Chemistry Amines MCQs Set B

Question:

The above reaction sequence (D) is

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

The product (C) is

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

The product A will be

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  Write the correct order of the following diazonium cations for the coupling with phenol

• a) III > IV > I > II
• b) II > I > IV > III
• c) III > I > II > IV
• d) II > IV > I > III

Answer: III > IV > I > II

Question: When methyl iodide treated with ammonia, the product obtained is

• a) Methyl amine
• b) Dimethyl amine
• c) Trimethyl amine
• d) All of these

Answer: All of these

Question:  C₇H₉N has how many isomeric forms that contain a benzene ring?

• a) 4
• b) 5
• c) 6
• d) 7

Answer: 5

Question:  The following reaction

is known by the name 

• a) Acetylation reaction
• b) Schotten-Baumen reaction
• c)  Friedel-Craft’s reaction
• d) Perkin’s reaction

Answer:  Schotten-Baumen reaction

Question: The electrolytic reduction of nitrobenzene in strongly acidic medium produces

• a) Aniline
• b) p-Aminophenol 
• c) Azoxybenzene
• d) Azobenzene

Answer:  p-Aminophenol 

Question:  In the following reaction, the product (A)

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Method by which Aniline cannot be prepared is

• a) Reduction of nitrobenzene with H₂/Pd in ethanol
• b) Potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution
• c) Hydrolysis of phenylisocyanide with acidic solution
• d) Degradation of benzamide with bromine in alkaline solution

Answer: Potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution

Question:  Which of the following will be most stable diazonium salt

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  An organic compound (C₃H₉N) (A), when treated with nitrous acid, gave an alcohol and N₂ gas was evolved.(A) on warming with CHCl₃ and caustic potash gave (C) which on reduction gave isopropylmethylamine. Predict the structure of (A)

• a)

  

• b) CH₃CH₂–NH–CH₃
• c)

  

• d) CH₃CH₂CH₂–NH₂

Answer:

Question:  Nitrobenzene on reaction with conc. HNO₃/H₂SO₄ at 80–100°C forms which one of the following products?

• a) 1,3-Dinitrobenzene 
• b) 1,4-Dinitrobenzene 
• c) 1,2,4-Trinitrobenzene 
• d) 1,2-Dinitrobenzene

Answer:  1,3-Dinitrobenzene 

Question:  In the reaction

A is 

• a) Cu₂Cl₂ 
• b) H₃PO₂ and H₂O 
• c) H⁺/H₂O 
• d) HgSO₄/H₂SO₄

Answer: H₃PO₂ and H₂O 

Question:  What is the product obtained in the following reaction:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Which of the following compounds is most basic ?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Acetamide is treated with the following reagents separately. Which one of these would yield methylamine?

• a) NaOH – Br₂
• b) Sodalime
• c) Hot conc. H₂SO₄
• d) PCl₅

Answer: NaOH – Br₂

Question: Which of the following statements about primary amines is 'False'?

• a) Alkyl amines are stronger bases than aryl amines
• b) Alkyl amines react with nitrous acid to produce alcohols
• c) Aryl amines react with nitrous acid to produce phenols
• d) Alkyl amines are stronger bases than ammonia

Answer: Aryl amines react with nitrous acid to produce phenols

Question: Aniline in a set of the following reactions yielded a coloured product 'Y'

The structure of 'Y' would be

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  Match the compounds given in Column-I with their characteristic reactions given in Column-II. Select the correct option

• a) a(ii), b(i), c(iv), d(iii)
• b) a(iii), b(ii), c(i), d(iv)
• c) a(ii), b(iii), c(i), d(iv)
• d) a(iv), b(ii), c(iii), d(i)

Answer: a(ii), b(iii), c(i), d(iv)

Question:  Predict the product

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  In a reaction of aniline a coloured product C was obtained

The structure of C would be

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Which one of the following on reduction with lithium aluminium hydride yields a secondary amine ?

• a) Methyl cyanide
• b) Nitroethane
• c) Methylisocyanide
• d) Acetamide

Answer: Methylisocyanide

Question: Which of the following is more basic than aniline ?

• a) Diphenylamine
• b) Triphenylamine
• c) p-Nitroaniline
• d) Benzylamine

Answer: Benzylamine

Question: Electrolytic reduction of Nitrobenzene in weakly acidic medium gives

• a) Aniline
• b) Nitrosobenzene
• c) N-phenylhydroxylamine
• d) p-Hydroxyaniline

Answer: Aniline

Question: The compound obtained by heating a mixture of ethyl amine and chloroform with ethanolic potassium hydroxide (KOH) is

• a) An amide
• b) An amide and nitro compound
• c) An ethyl isocyanide
• d) An alkyl halide

Answer: An ethyl isocyanide

Question: Which of the following is most basic in a solution of carbon tetrachloride?

• a) NH₃
• b) CH₃CH₂NH₂
• c) (CH₃CH₂)₂NH   
• d) (CH₃CH₂)₃N

Answer:  (CH₃CH₂)₃N

Question: Amides may be converted into amines by a reaction named after

• a) Hofmann
• b) Claisen
• c) Perkin
• d) Kekule

Answer: Hofmann

Question: Diazo-coupling is useful to prepare some

• a) Dyes
• b) Vitamins
• c) Pesticides
• d) Proteins

Answer: Dyes

Question: Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of dilute hydrochloric acid. The compound so formed is converted into a tetrafluoroborate which issubsequently heated dry. The final product is

• a) p-bromoaniline
• b) p-bromofluorobenzene
• c) 1, 3, 5-tribromobenzene 
• d) 2, 4, 6-tribromofluorobenzene

Answer:  2, 4, 6-tribromofluorobenzene

More Questions.....................................

Question: Phenyl isocyanides are prepared by which the following reaction?

• a) Reimer-Tiemann reaction 
• b) Carbylamine reaction
• c) Rosenmund’s reaction
• d) Wurtz reaction

Answer: Carbylamine reaction

Question:

N– methyl aniline.

Then A is

• a)

  

• b)

  

• c) CH₃NH₂
• d)

  

Answer:

Question:  The final product C, obtained in this reaction

would be

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO₃ and conc. H₂SO₄ . In the mixture, nitric acid acts as a/an

• a) Catalyst
• b) Reducing agent
• c) Acid
• d) Base

Answer: Base

Question:  How many isomers of molecular formula C₃H₉N will liberate N₂ gas on treatment with HNO₂ ?

• a) One
• b) Three
• c) Two
• d) Five

Answer: Two

Question:

The product (B) is

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: The compound which can show tautomerism

• a) CH₃CH₂– NO₂
• b)

  

• c)

  

• d) All of these

Answer:

Question: Gabriel phthalimide reaction is used for the preparation of

• a) Primary aromatic amines
• b) Secondary amines
• c) Aliphatic primary amines
• d) Tertiary amines

Answer: Aliphatic primary amines

Question:  When acetamide is treated with Br₂ and caustic soda, then we get

• a) Bromoacetic acid
• b) Acetic acid
• c) Methylamine
• d) Ethane

Answer: Methylamine

Question: Amines are basic in character because they have

• a) A lone pair of electrons on the nitrogen atom
• b) A hydroxyl group in the molecule
• c) Replaceable hydrogen atom
• d) Saturated C atom

Answer: A lone pair of electrons on the nitrogen atom

Question: Aniline on reaction with acetyl chloride gives

• a) Phenol
• b) Acetamide
• c) Acetanilide
• d) Benzene

Answer: Acetanilide

Question: Reaction of nitrous acid with aliphatic primary amine in the cold gives

• a) A diazonium salt
• b) An alcohol
• c) A nitrite
• d) A dye

Answer: An alcohol

Question: Bromine water reacts with aniline to give

• a) o-Bromoaniline 
• b) m-Bromoaniline
• c) p-Bromoaniline 
• d) 2, 4, 6-Tribromoaniline

Answer:  2, 4, 6-Tribromoaniline

Question: When benzene diazonium chloride is treated with cuprous chloride and HCI the product formed is

• a) Chlorobenzene
• b) Benzene
• c) Phenol
• d) Chloroazobenzene

Answer: Chlorobenzene

Question: Which one of the following compounds gives dye test?

• a) Aniline
• b) Methylamine
• c) Diphenylamine
• d) Ethylamine

Answer: Aniline

Question: Benzenediazonium chloride on reaction with water gives

• a) Phenol
• b) Aniline
• c) Benzylamine
• d) Benzaldehyde

Answer: Phenol

Question:  How many isomers of molecular formula C₃H₉N will liberate N₂ gas on treatment with HNO₂?

• a) One
• b) Three
• c) Two
• d) Five

Answer: Two

Question:  Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO₃ and conc. H₂SO₄ . In the mixture, nitric acid acts as a/an

• a) Catalyst
• b) Reducing agent
• c) Acid
• d) Base

Answer: Base

Question:  In the given reaction

The product (C) is

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  The major organic product formed from the following reaction

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Electrolytic reduction of Nitrobenzene in weakly acidic medium gives

• a) Aniline
• b) Nitrosobenzene
• c) N-phenylhydroxylamine 
• d) p-Hydroxyaniline

Answer: Aniline

Question:  What will be the final product in the following reaction sequence?

• a) CH₃CH₂CONH₂ 
• b) CH₃CH₂COBr
• c) CH₃CH₂NH₂  
• d) CH₃CH₂CH₂NH₂

Answer:  CH₃CH₂NH₂  

Question: The action of nitrous acid on an aliphatic primary amine, gives

• a) Secondary amine
• b) Nitroalkane
• c) Alcohol
• d) Alkyl nitrite

Answer: Alcohol

Question: The compound obtained by heating a mixture of ethyl amine and chloroform with ethanolic potassium hydroxide (KOH) is

• a) An amide
• b) An amide and nitro compound
• c) An ethyl isocyanide
• d) An alkyl halide

Answer: An ethyl isocyanide

Question: Amides may be converted into amines by a reaction named after

• a) Hofmann
• b) Claisen
• c) Perkin
• d) Kekule

Answer: Hofmann

Question:  In the reaction,

the term Y is

• a) Acetaldehyde
• b) Ethanamine
• c) Acetone
• d) Dimethylamine

Answer: Acetaldehyde

Question: Diazo-coupling is useful to prepare some

• a) Dyes
• b) Vitamins
• c) Pesticides
• d) Proteins

Answer: Dyes

Question:  The correct IUPAC name for

• a) Allyl methylamine
• b) 2-Amino4-pentene
• c) 4-Aminopent-I -ene 
• d) N-Methylprop-2-en-1-amine

Answer: N-Methylprop-2-en-1-amine

Question:

In above reaction hybridisation state of carbon changes from

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Hoffmann bromamide degradation reaction is shown by

• a) Ar – NH₂  
• b) Ar – CONH₂
• c) Ar – NO₂
• d) Ar – CH₂NH₂

Answer:  Ar – CONH₂