MCQ Questions Chapter 13 Amines Class 12 Chemistry

Please refer to MCQ Questions Chapter 13 Amines Class 12 Chemistry with answers provided below. These multiple-choice questions have been developed based on the latest NCERT book for class 12 Chemistry issued for the current academic year. We have provided MCQ Questions for Class 12 Chemistry for all chapters on our website. Students should learn the objective based questions for Chapter 13 Amines in Class 12 Chemistry provided below to get more marks in exams.

Chapter 13 Amines MCQ Questions

Please refer to the following Chapter 13 Amines MCQ Questions Class 12 Chemistry with solutions for all important topics in the chapter.

MCQ Questions Answers for Chapter 13 Amines Class 12 Chemistry

Question. Amongst the following, the strongest base in aqueous medium is
(a) CH₃NH₂
(b) NCCH₂NH₂
(c) (CH₃)₂NH
(d) C₆H₅NHCH₃       

Question. The major product of the following reaction is

Question. The best reagent for converting 2-phenylpropanamide into 2-phenylpropanamine is
(a) excess H₂
(b) Br₂ in aqueous NaOH
(c) iodine in the presence of phosphorus
(d) LiAIH₄ in ether     

Question. R NH₂ re acts with C₆H₅SO₂Cl in aque ous KOH to give a clear solution. On acidifi cation a precip itate is obtained which is due to the for ma tion of
           H       
            l
(a) R— N+ —SO₂C₆H₅ OH⁻
            l
           H
(b) R—N⁻SO₂C₆H₅K⁺
(c) C₆H₅SO₂NH₂
(d) R—NH—SO₂—C₆H₅           

Question. Nitration of aniline also gives m-nitroaniline in strong acidic me dium be cause
(a) in electrophilic substitution reaction amino group is meta-directive
(b) inspite of substituents nitro group always goes to m -position
(c) in acidic (strong) medium aniline is present as anilinium ion
(d) None of the above                     

Question.  The ma jor prod uct of the re ac tion be tween m-di nitro ben zene and NH4SH is

Question. Nitration of aniline also gives m-nitroaniline in strong acidic me dium be cause
(a) in electrophilic substitution reaction amino group is meta-directive
(b) inspite of substituents nitro group always goes to m -position
(c) in acidic (strong) medium aniline is present as anilinium ion
(d) None of the above             

Question. An or ganic com pound A on re act ing with NH₃ gives B. On heating, B gives C. C in the pres ence of KOH re acts with Br₂ to give CH₃CH₂NH₂. A is
(a) CH₃COOH 
(b) CH₃CH₂CH₂COOH
(c) CH₃—CH—COOH 
                l
               CH₃
(d) CH₃CH₃COOH             

Question. Which of the fol low ing is the stron gest base?

Question. Reduction of aromatic nitro compounds using Fe and HCl gives
(a) aromatic oxime
(b) aromatic hydrocarbon
(c) aromatic primary amine
(d) aromatic amide 

Question. In which of the following reaction, tertiary amine is obtained?
(a) Aniline →^CH₃I →^CH₃I
(b) Aniline →^CH₃I
(c) Nitrobenzene →^Sn/HCl
(d) None of these   

Question. The increasing order of basicity of the following compounds is

(a) I < II < III < IV
(b) II < I < III < IV
(c) II < I < IV < III
(d) IV < II < I < III

Question. Which one of the fol low ing is the stron gest base in aqueous solution?
(a) Trimethyl amine
(b) Aniline
(c) Dimethyl amine
(d) Methyl amine   

Question. Acetamide is treated sep a rately with the fol low ing re agents. Which one of these would give methylamine?
(a) PCl₅
(b) NaOH + Br₂ 
(c) Soda lime
(d) Hot conc. H₂SO₄     

Question. Match the following and choose the correct option.

Codes
A B C D
(a) 2 1 3 4
(b) 4 3 1 2
(c) 3 2 4 1
(d) 4 1 3 2

Question. The bad smelling substance fonned by the action of alcoholic caustic potash on chloroform and aniline is
(a) nitrobenzene
(b) phenyl isocyanide 
(c) phenyl cyanide
(d) phenyl isocyanate   

Question. Which of the following is the strongest base?

Question. the decreasing order of basic characters of the three amines and ammonia is 
(a) NH₃ > CH₃NH₂ > C₂H₅NH₂ > C₆H₅NH₂
(b) C₂H₅NH₂ > CH₃NH₂ > NH₃ > C₆H₅NH₂
(c) C₆H₅NH₂ > C₂H₅NH₂ > CH₃NH₂ > NH₃
(d) CH₃NH₂ > C₂H₅NH₂ > C₆H₅NH₂ > NH₃       

Question. The amine which will not liberate nitrogen on reaction with nitrous acid is 
(a) trimethylamine
(b) ethylamine
(c) sec-butylamine
(d) t-butylamine
(e) iso-propylamine     

Question. In the reaction,
RNH₂ →^HNO₂ A +B +C ↑; C is
(a) NH₃
(b) N₂
(c) O₂
(d) CO₂       

Question. Aniline gives a precipitate with bromine. The colour of precipitate is 
(a) red
(b) black
(c) blue
(d) white   

Question. Ethylamine on acetylation gives 
(a) N-ethyl acetamide
(b) acetamide
(c) methyl acetamide
(d) None of these       

Question. Reduction of aniline with acetyl chloride in presence of NaOH produce 
(a) aniline hydrochloride
(b) acetanilide
(c) p -chloroaniline
(d) a red bye     

Question. Aniline on oxidation with Na₂Cr₂O₇ and H₂SO₄ gives
(a) benzoic acid 
(b) m-amino benzoic acid
(c) Schiff’s base
(d) p-benzoquinone     

Question. n-propylarnine yields a volatile compound X on warming with ale. alkali and chloroform. X has an offensive odour. The structure of X is 
(a) CH₃CH₂CH₂CN
(b) (CH₃)₂CHCN
(c) CH₃CH₂CH₂NC
(d) (CH₃)₂CHNC         

Question. CHCI₃ + C₆H₅NH₂ + 3NaOH → A+3B+3C In the above reaction, the product A is
(a) chlorobenzene
(b) phenyl isocyanide
(c) phenyl cyanide
(d) phenyl chloride       

Question. In the Hofmann-bromamide degradation reaction, the number of moles of NaOH and Br₂ used per mole of amine produced are 
(a) four moles of NaOH and two moles of Br₂
(b) two moles of NaOH and two moles of Br₂
(c) four moles of NaOH and one mole of Br₂
(d) one mole of NaOH and two moles of Br₂       

Question. On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is 
(a) an alkanol
(b) an alkanediol
(c) an alkyl cyanide
(d) an alkyl isocyanide           

Question. Which of the following compounds will give significant amount of meta-product during mononitration reaction?

Question. The order of basicity of amines in gaseous state is
(a) 1°> 2°> 3°> NH₃ 
(b) 3°> 2°> NH₃ > 1° 
(c) 3°> 2°> 1°> NH₃ 
(d) NH₃ > 1°> 2°> 3°>       

Question. Carbylamine forms from aliphatic or aromatic primary amine via which of the following intermediates?
(a) Carbanion
(b) Carbene
(c) Carbocation
(d) Carbon radical       

Question.  In the reaction,

The product E is

Question. Considering the basic strength of amines in aqueous solution, which one has the smallest pKb value?
(a) (CH₃)₂NH 
(b) CH₃NH₂
(c) (CH₃)₃N 
(d) C₆H₅NH₂     

Question. A compound with molecular mass 180 is acylated with CH3COCl to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is 
(a) 2
(b) 5
(c) 4
(d) 6         

Question.  In the chemical reaction,

Compounds A and B respectively are
(a) fluorobenzene and phenol
(b) benzene diazonium chloride and benzonitrile
(c) nitrobenzene and chlorobenzene
(d) phenol and bromobenzene

Question. Which of the following is formed when RNH₂ reacts with R CHO?
(a) Hemiacetals
(b) Acetals
(c) Ketals
(d) Imines         

Question. The molecular formula C₃H₉N cannot represent 
(a) 1° amine
(b) 2° amine
(c) 3° amine
(d) quarternary salt   

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. Dye test can be used to distinguish 
(a) ethylamine and acetamide
(b) ethylamine and aniline
(c) urea and acetamide
(d) methylarnine and ethylarnine       

Question. Benzyl amine reacts with nitrous acid to give 
(a) azobenzene
(b) benzene
(c) benzyl alcohol
(d) phenol   

Question. CH₃NH₂ + CHCI₃ + KOH → Nitrogen containing compound + KCI + H₂O.
Nitrogen containing compound is 
(a) CH₃—C=N
(b) CH₃—NH—CH₃
(c) CH₃—N^–=C⁺
(d) CH₃N⁺=C^–         

Question. Methyl amine reacts with methyl iodide. For completion of reaction, how many moles of methyl iodide are required ?
(a) 1
(b) 2
(c) 3
(d) 4         

Question.

Question. Identify the product in the following sequence
3 4 5-tribromoaniline →(i) Diazotisation ? 
                                         (ii) H3PO2 .
(a) 3, 4, 5-tribromobenzene
(b) 1, 2, 3-tribromobenzene
(c) 2, 4, 6-tribromobenzene
(d) 3, 4, 5-tribromonitrobenzene
(e) 3, 4, 5-tribromophenol       

Question. Among the amines (A) C₆H₅NH₂ , (B) CH₃NH₂ , (C) (CH₃)₂NH, (D) (CH₃)₃ N, the order ofbasicity is
(a) A < B < D < C 
(b) C < D < B < A
(c) A > B > C > D
(d) B < C < D < A
(e) D < C < B < A       

Question. Benzene diazonium chloride on treatment with hypo phosphorus acid and water in the presence of Cu⁺ catalyst produce 
(a) benzene
(b) toluene
(c) aniline
(d) chlorobenzene     

Question. Nitration of aniline in strongly acidic medium, result in the formation of m -nitroaniline also. 
This is because
(a) amino group is meta orienting during electrophilic substitution reaction.
(b) nitro group goes always to the meta position irrespective of the substituents.
(c) nitration of aniline is a nucleophilic substin,tion reaction in strongly acidic medium.
(d) in strongly acidic conditions aniline is present as aniliniurn ion.
(e) strong acids generate nitrite anion which can attack only the meta position.       

Question. Which of the following compounds will form alcohol on treatment with NaNO₂, HCI/ H₂O at 0°C? 
(a) (CH₃)CHNH₂
(b) C₆H₅NH₂

Question. A gaseous carbon compound is soluble in dilute HCI. The solution on treating with NaNO₂ gives off nitrogen leaving behind a solution which smells of wood spitit. The carbon compound is 
(a) HCHO
(b) CO
(c) C₂H₅NH₂
(d) CH₃NH₂       

Question. The reagent with which the following reaction is best accomplished is

Question. In the chemical reactions,

Compounds A and B respectively are 
(a) fluorobenzene and phenol
(b) benzene diazonium chloride and benzonitrile
(c) nitrobenzene and chlorobenzene
(d) phenol and bromobenzene       

Question. Which one of the following is not the correct reaction of aryl diazonium salts? 

Question. When aqueous solution of benzene diazoniwn chloride is boiled, the product formed is 
(a) C₆H₅CH₂OH
(b) C₆H₆ + N₂
(c) C₆H₅COOH
(d) C₆H₅OH     

Question. Aniline when diazotised in cold and then treated with dimethyl aniline gives a coloured product. Its structure would be

Question. Benzene diazonium chloride on reaction with phenol in weakly basic medium gives 
(a) diphenyl ether
(b) p-hydroxy azobenzene
(c) chlorobenzene
(d) benzene       

Question. The com pound, which on reaction with aqueous nitrous acid at low temperature, produces an oily nitrosoamine, is
(a) diethylamine
(b) ethylamine
(c) aniline
(d) methyl amine           

Question. Which of the following will give only one monosubstituted product?
(a) o-dinitrobenzene
(b) m-dinitrobenzene
(c) p-dinitrobenzene
(d) None of these   

Question. In the chemical reactions,

the compounds ‘A’ and ‘B’ respectively are
(a) nitrobenzene and fluorobenzene
(b) phenol and benzene
(c) benzene diazonium chloride and fluorobenzene
(d) nitrobenzene and chlorobenzene

Question. An organic compound containing C, H and N only was found to contain C = 61.03, N = 23.71. Its vapour density is 29.5. On treatment with nitrous acid, it gave nitrogen. The compound is
(a) CH₃ —CH(NH₂)—CH₃
(b) CH₃ —CH₂ —NH—CH₃
(c) CH₃ — N— CH₃
                |
                 CH₃
(d) CH₃ — HC == CH—NH₂         

Question. Re ac tants of re ac tion I are CH₃CONH_2, KOH, Br₂ Reactants of reaction II are CH₃NH₂, CHCl₃, KOH The intermediate species of reaction I and reaction II are respectively
(a) carbonium ion, carbene
(b) carbene, nitrene
(c) nitrene, carbene
(d) carbocation, nitrene               

Question.

Product of this reaction is

Question. Benzene diazonium chloride reacts with hypophosphorous acid to produce
(a) benzene
(b) phenol
(c) cyanobenzene
(d) chlorobenzene          

Question. The main product formed in the reaction is

Question. Fluorobenzene (C₆H₅F) can be synthesised in the laboratory
(a) by heating phenol with HF and KF
(b) from aniline by diazotisation followed by heating the diazonium salt with HBF⁴
(c) by direct fluorination of benzene with F₂ gas 
(d) by reacting bromobenzene with NaF solution         

Question. Consider the following reaction sequence

Question. Toluene is nitrated and the resulting product is reduced withtin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide solution. The reaction mixture so obtained contains
(a) mixture of o-and p-bromotoluenes
(b) mixture of o-and p-dibromobenzenes
(c) mixture of o-and p-bromoanilines
(d) mixture of o-and m-bromotoluenes   

Question. Com pound ‘ A’ (C₃H₉N) reacts with benzene sulphonyl chloride to form a solid in soluble in alkali. The structure of compound ‘ A’ is
(a) CH3 — N| — CH₃
                 |
                  CH₃
(b) CH₃ —CH₂ —NH—CH₃
(c) CH₃ —CH₂ —CH₂ —NH₂
(d) All of these       

Question. A major component of Borsch reagent is obtained by reacting hydrazine hydrate with which of the following?

Question. A compound (X ) has the molecular formula C₇H₇NO. On treatment with Br₂ and KOH. (X ) gives an amine (Y ); (Y) gives carbylamine test. (Y) upon diazotisation and coupling with phenol gives anazodye (Z ). (X ) is
(a) PhCONH₂
(b) PhCONHCOCH₃
(c) PhNO₂
(d) PhCOONH₄         

Question.

Question. (A) is subjected to reduction with Zn-Hg/HCl and the product formed is N-methylmethanamine (A) can be
(a) ethane nitrile
(b) Nitroethane
(c) carbylamino ethane
(d) carbylamino methane         

Question.

Question. Which one of the following methods is neither meant for the synthesis nor for separation of amines?
(a) Curtius reaction
(b) Wurtz reaction
(c) Hofmann method
(d) Hinsberg method     

Question. Consider the following reaction se quence The final product of this reaction sequence is

Question. On heating aniline with fuming sulphuric acid at 180°C, the compound formed will be
(a) aniline disulphate
(b) aniline-2,4,6-trisulphonic acid
(c) sulphanilic acid
(d) None of these           

Question. The cor rect or der of ba sic strength of the fol low ing are

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

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