Refer to CBSE Class 12 Chemistry Amines MCQs provided below available for download in Pdf. The MCQ Questions for Class 12 Chemistry with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 13 Amines are an important part of exams for Class 12 Chemistry and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 12 Chemistry and also download more latest study material for all subjects
MCQ for Class 12 Chemistry Chapter 13 Amines
Class 12 Chemistry students should refer to the following multiple-choice questions with answers for Chapter 13 Amines in Class 12.
Chapter 13 Amines MCQ Questions Class 12 Chemistry with Answers
Question : The total number of electrons around the nitrogen atom in amines are
(a) 8 (b) 7
(c) 4 (d) 3
Answer : A
Question : Amines play an important role in the survival of life. Naturally they are found in
(a) proteins (b) vitamins
(c) alkaloids (d) All of these
Answer : D
Question : Propionamide on Hofmann degradation gives –
(a) methyl amine (b) ethyl amine
(c) propyl amine (d) ethyl cyanide
Answer : B
Question : Secondary amines could be prepared by
(a) reduction of nitriles
(b) Hofmann bromamide reaction
(c) reduction of amides
(d) reduction of isonitriles
Answer : D
Question : Gabriel’s phthalimide synthesis is used for the preparation of
(a) Primary aromatic amines
(b) Secondary amines
(c) Primary aliphatic amines
(d) Tertiary amines
Answer : C
Question : Treatment of ammonia with excess of ethyl iodide will yield
(a) diethylamine
(b) ethylamine
(c) triethylamine
(d) tetraethylammonium iodide
Answer : D
Question : The reduction of nitro compounds is most preferred in the presence of
(a) Pd/H2 in ethanol (b) Sn + HCl
(c) finely divided Ni (d) iron scrap and HCl.
Answer : D
Question : An alkyl or benzyl halide on reaction with an ethanolic solution of ammonia undergoes
(a) electrophilic substitution reaction
(b) nucleophilic substitution reaction.
(c) free radical mechanism.
(d) nucleophilic addition reaction.
Answer : B
Question : Which of the following will give primary amine only ?
(i) ammonia + propylchloride
(ii) potassium pthalimide + ethylchloride
(iii) potassium pthalimide + chlorobenzene
(a) (i) and (ii) (b) (i) and (iii)
(c) (ii) and (iii) (d) (i), (ii) and (iii)
Answer : A
Question : Amines have
(a) Garlic odour (b) Fishy odour
(c) Jasmine odour (d) Bitter almonds odour
Answer : B
Question : Amines behave as
(a) lewis acids (b) lewis bases
(c) aprotic acids (d) amphoteric compounds
Answer : B
Question : The basic character of amines is due to
(a) presence of nitrogen atom
(b) lone pair of electrons on nitrogen atom
(c) tetrahedral structure
(d) high electronegativity of nitrogen
Answer : B
Question : Aliphatic amines are.....basic than NH3 but aromatic amines are......basic than NH3.
(a) more, less (b) less, more
(c) both (a) and (b) (d) None of these
Answer : A
Question : Substitution of one alkyl group by replacing hydrogen of primary amines
(a) increases the base strength
(b) decreases the base strength
(c) remains the same
(d) None of the above
Answer : A
Question : Which of the following is not characteristic of amines?
(a) They smell like ammonia
(b) They are inflammable in air
(c) They show the property of hydrogen bonding
(d) They are amphoteric in nature
Answer : D
Question : Which statement is not true among the following?
(a) Amines are bases
(b) They turn red litmus blue
(c) Trimethyl amine is less basic than dimethyl amine
(d) Amines yield alcohols on aqueous hydrolysis.
Answer : D
Question : Aniline is used
(a) in crimping of wool (b) in dyeing industry
(c) in making of glue (d) in fast drying vanish
Answer : B
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 : C
Question : Mark the correct statement
(a) Methylamine is slightly acidic
(b) Methylamine is less basic than ammonia
(c) Methylamine is a stronger base than ammonia
(d) Methylamine forms salts with alkalies.
Answer : C
Question : For carbylamine reaction, we need hot alcoholic KOH and
(a) any primary amine and chloroform
(b) chloroform and silver powder
(c) a primary amine and an alkyl halide
(d) a monoalkylamine and trichloromethane.
Answer : A
Question : A secondary amine is
(a) a compound with two carbon atoms and an –NH2 group.
(b) a compound containing two –NH2 groups.
(c) a compound in which hydrogens of NH3 have been replaced by two alkyl groups.
(d) a compound with an –NH2 group on carbon atom in number two position.
Question : The general formula of quaternary ammonium compound is
(a) R–NH2
(b) R3N
(c) R4N+ X–
(d) NH4X
Question : The total number of electrons around the nitrogen atom in amines are
(a) 8
(b) 7
(c) 4
(d) 3
Question : (CH3)2CHNH2 is reacted with excess acetic anhydride, the compound formed is
(a) (CH3)2CHNCOCH3
(b) (CH3)2CN(COCH3)2
(c) (CH3)2CHOH
(d) (CH3)2CN(COOCH3)2
Question : The number of primary amines of formula C4H11N is :
(a) 1
(b) 3
(c) 4
(d) 2
Question : Ethylamine reacts with HNO2 giving :
(a) C2H5OH
(b) C2H5NO2
(c) NH3
(d) C2H6
Question : The correct IUPAC name for CH2 = CHCH2NHCH3 is
(a) Allylmethylamine
(b) 2-amino-4-pentene
(c) 4-aminopent-1-ene
(d) N-methylprop-2-en-1-amine
Question : Amines play an important role in the survival of life. Naturally they are found in
(a) proteins
(b) vitamins
(c) alkaloids
(d) All of these
Question : Intermediates formed during reaction of RCONH2 with Br2 and KOH are
(a) RCONHBr and RNCO
(b) RNHCOBr and RNCO
(c) RNHBr and RCONHBr
(d) RCONBr2
Question : Primary amines can be distinguished from secondary and tertiary amines by reacting with
(a) Chloroform and alcoholic KOH
(b) Methyl iodide
(c) Chloroform alone
(d) Zinc dust
Question : Propionamide on Hofmann degradation gives –
(a) methyl amine
(b) ethyl amine
(c) propyl amine
(d) ethyl cyanide
Question : Secondary amines could be prepared by
(a) reduction of nitriles
(b) Hofmann bromamide reaction
(c) reduction of amides
(d) reduction of isonitriles
Question : Gabriel’s phthalimide synthesis is used for the preparation of
(a) Primary aromatic amines
(b) Secondary amines
(c) Primary aliphatic amines
(d) Tertiary amines
Question : Ethyl amine can be obtained by the
(a) Action of NH3 on ethyl iodide.
(b) Action of NH3 on ethyl alcohol.
(c) Both (a) and (b)
(d) Neither (a) nor (b)
Question : Treatment of ammonia with excess of ethyl iodide will yield
(a) diethylamine
(b) ethylamine
(c) triethylamine
(d) tetraethylammonium iodide
Question : For alkylation of ammonia which of the following is not used?
(a) CH3–X
(b) CH3–CH2–X
(c) (CH3)2CH–X
(d) (CH3)3C–X
Question : Which of the following amines can be prepared by Gabriel method ?
(i) CH3CH2NH2
(ii) (CH3)2CHNH2
(iii) (CH3)3CNH2
(iv) C6H5NH2
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i), (ii) and (iii)
(d) (i) and (ii)
Question : Amongst the given set of reactants, the most appropriate for preparing 2° amine is ___________.
(a) 2°R–Br + NH3
(b) 2°R–Br + NaCN followed by H2/Pt
(c) 1°R–NH2 + RCHO followed by H2/Pt
(d) 1°R–Br (2 mol) + Potassium phthalimide followed by H3O+/heat
Question : The best reagent for converting 2 – phenylpropanamide into 2-phenylpropanamine is ___________.
(a) excess H2
(b) Br2in aqueous NaOH
(c) iodine in the presence of red phosphorus
(d) LiAlH4in ether
Question : Which of the following methods of preparation of amines will give same number of carbon atoms in the chain of amines as in the reactant?
(a) Reaction of nitrite with LiAlH4.
(b) Reaction of amide with LiAlH4 followed by treatment with water.
(c) Heating alkylhalide with potassium salt of phthalimide followed by hydrolysis.
(d) Treatment of amide with bromine in aquesous solution of sodium hydroxide.
Question : The reduction of nitro compounds is most preferred in the presence of
(a) Pd/H2 in ethanol
(b) Sn + HCl
(c) finely divided Ni
(d) iron scrap and HCl.
Question : An alkyl or benzyl halide on reaction with an ethanolic solution of ammonia undergoes
(a) electrophilic substitution reaction
(b) nucleophilic substitution reaction.
(c) free radical mechanism.
(d) nucleophilic addition reaction.
Question : In the ammonolysis of alkyl halides the halogen atom is replaced by an amino(–NH2) group which of the following represent the correct order of reactivity of halides with amines.
(a) RBr > RI > RCl
(b) RI > RCl > RBr
(c) RI > RBr > RCl
(d) RCl > RBr > RI
Question : Which of the following will give primary amine only ?
(i) ammonia + propylchloride
(ii) potassium pthalimide + ethylchloride
(iii) potassium pthalimide + chlorobenzene
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (i), (ii) and (iii)
Question : Amines have
(a) Garlic odour
(b) Fishy odour
(c) Jasmine odour
(d) Bitter almonds odour
Question : Aniline is less soluble in water than ethyl amine due to
(a) resonance stablization of benzene ring
(b) resonance stabilization of anilium ion
(c) more hydrophobic nature of C6H5 group than C2H5 group
(d) more hydrophobic nature of C6H5 group than C2H5 Group
Question : Which of the following is not correct ?
(a) Ethyl amine and aniline both have – NH2 group
(b) Ethyl amine and aniline dissolve in HCl
(c) Ethyl amine and aniline both react with CHCl3 and KOH to form unpleasant smelling compound
(d) Ethyl amine and aniline both react with HNO2 in cold to give hydroxy compounds
Question : Amines behave as
(a) lewis acids
(b) lewis bases
(c) aprotic acids
(d) amphoteric compounds
Question : The basic character of amines is due to
(a) presence of nitrogen atom
(b) lone pair of electrons on nitrogen atom
(c) tetrahedral structure
(d) high electronegativity of nitrogen
Question : Aliphatic amines are.....basic than NH3 but aromatic amines are......basic than NH3.
(a) more, less
(b) less, more
(c) both (a) and (b)
(d) None of these
Question : Substitution of one alkyl group by replacing hydrogen of primary amines
(a) increases the base strength
(b) decreases the base strength
(c) remains the same
(d) None of the above
Question : Which of the following is not characteristic of amines?
(a) They smell like ammonia
(b) They are inflammable in air
(c) They show the property of hydrogen bonding
(d) They are amphoteric in nature
Question : The correct order of basicity in amines
(i) C2H5NH2
(ii) CH3NH2
(iii) (CH3)2NH
(iv) (CH3)3N
(a) (i) < (iv) < (ii) < (iii)
(b) (iv) < (ii) < (iii) < (i)
(c) (i) < (ii) < (iii) < (iv)
(d) (ii) < (iii) < (iv) < (i)
Question : The conjugate base of (CH3)2NH+2 is
(a) (CH3)2NH
(b) (CH3)2N+\
(c) (CH3)3N+
(d) (CH3)2N–
Question : High basicity of Me2NH relative to Me3N is attributed to:
(a) effect of solvent
(b) inductive effect of Me\
(c) shape of Me2NH
(d) shape of Me3N
Question : Hinsberg reagent is
(a) C6H5SO3H
(b) C6H5NO
(c) C6H5SO2Cl
(d) C6H5N2Cl
Question : Which of the following statement is correct ?
(a) Ammonia is more basic than methylamine.
(b) Methylamine is more basic than ammonia.
(c) Dimethylamine is less basic than methylamine.
(d) Dimethylamine is less basic than trimethylamine.
Question : Reaction of aniline with benzaldehyde is
(a) substitution
(b) addition
(c) condensation
(d) polymerization
Question : The amine that does not react with acetyl chloride is
(a) CH3NH2
(b) (CH3)2NH
(c) (CH3)3N
(d) None of these
Question : The correct decreasing order of basic strength of the following species is __________ H2O, NH3, OH, NH2 –
(a) NH2 – > OH– > NH3 > H2O
(b) OH– > NH2 – > H2O > NH3
(c) NH3 > H2O > NH2 – > OH–
(d) H2O > NH3 > OH–> NH2 –
Question : Which of the following factors affect the basic strength of amine?
(i) Inductive effect
(ii) Steric hinderance
(iii) Solvation effect
(iv) Solubility in organic solvents.
(a) (i) and (iv)
(b) (i), (ii) and (iii)
(c) (ii) and (iii)
(d) (ii) and (iv)
Question : Which statement is not true among the following?
(a) Amines are bases
(b) They turn red litmus blue
(c) Trimethyl amine is less basic than dimethyl amine
(d) Amines yield alcohols on aqueous hydrolysis.
Question : Aniline is used
(a) in crimping of wool
(b) in dyeing industry
(c) in making of glue
(d) in fast drying vanish
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 producealcohols
(c) Aryl amines react with nitrous acid to produce phenols
(d) Alkyl amines are stronger bases than ammonia
Question : Mark the correct statement
(a) Methylamine is slightly acidic
(b) Methylamine is less basic than ammonia
(c) Methylamine is a stronger base than ammonia
(d) Methylamine forms salts with alkalies.
Question : For carbylamine reaction, we need hot alcoholic KOH and
(a) any primary amine and chloroform
(b) chloroform and silver powder
(c) a primary amine and an alkyl halide
(d) a monoalkylamine and trichloromethane.
Question : The compound obtained by heating a mixture of a primary amine and chloroform with ethanolic potassium hydroxide (KOH) is
(a) an alkyl cyanide
(b) a nitro compound
(c) an alkyl isocyanide
(d) an amide
Question : Which of the following compounds cannot be identified by carbylamine test?
(a) CH3CH2NH2
(b) CHCl3
(c) C6H5NH2
(d) C6H5–NH–C6H5
Question : Carbylamine reaction is used for the detection of
(a) aliphatic 2° amines
(b) aliphatic 1° amines
(c) aromatic 1° amines
(d) Both (b) and (c)
Question : An organic amino compound reacts with aqueous nitrous acid at low temperature to produce an oily nitrosoamine. The compound is
(a) CH3NH2
(b) CH3CH2NH2
(c) CH3CH2NHCH2CH3
(d) (CH3CH2)3N
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MCQs for Chapter 13 Amines Chemistry Class 12
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