MCQs for Chemistry Class 12 with Answers Chapter 13 Amines
Students of class 12 Chemistry should refer to MCQ Questions Class 12 Chemistry Amines with answers provided here which is an important chapter in Class 12 Chemistry NCERT textbook. These MCQ for Class 12 Chemistry with Answers have been prepared based on the latest CBSE and NCERT syllabus and examination guidelines for Class 12 Chemistry. The following MCQs can help you to practice and get better marks in the upcoming class 12 Chemistry examinatioBiomoleculesAminesn
Chapter 13 Amines MCQ with Answers Class 12 Chemistry
MCQ Questions Class 12 Chemistry Amines provided below have been prepared by expert teachers of grade 12. These objective questions with solutions are expected to come in the upcoming Standard 12 examinations. Learn the below provided MCQ questions to get better marks in examinations.
Question. Amine that cannot be prepared by Gabriel phthalimide synthesis is
Question. The best reagent for converting, 2-phenylpropanamide into 1-phenylethanamine is ____________.
(a) excess H2/Pt
Question. In order to prepare a 1° amine from an alkyl halide with simultaneous addition of one CH2 group in the carbon chain, the reagent used as source of nitrogen is ___________.
(a) Sodium amide, NaNH2
(b) Sodium azide, NaN3
(c) Potassium cyanide, KCN
(d) Potassium phthalimide, C6H4(CO)2N–K+
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 red phosphorus
(d) LiAlH4 in ether
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. Which of the following has highest pKb value?
Question. Carbylamine reaction is used as a test for
(a) primary amines
(b) aromatic amines
(c) primary and secondary amines
(d) secondary and tertiary amines
Question. N– ethyl benzene sulphonyl amide is strongly acidic and soluble in alkali due to presence of
(a) strong electron donating sulphonyl group.
(b) strong electron withdrawing sulphonyl group.
(c) weak electron donating sulphonyl group.
(d) weak electron withdrawing sulphonyl group.
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 reagents would not be a good choice for reducing an aryl nitro compound to an amine?
(a) H2 (excess)/Pt
(b) LiAlH4 in ether
(c) Fe and HCl
(d) Sn and HCl
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. When benzenediazonium chloride in hydrochloric acid reacts with cuprous chloride, then chlorobenzene is formed. The reaction is called
(a) Gattermann reaction
(b) Perkin reaction
(c) Etard reaction
(d) Sandmeyer reaction
Question. Which of the following compound will not undergo azo coupling reaction with benzene diazonium chloride.
Question. The source of nitrogen in Gabriel synthesis of amines is ___________.
(a) Sodium azide, NaN3
(b) Sodium nitrite, NaNO2
(c) Potassium cyanide, KCN
(d) Potassium phthalimide, C6H4(CO)2N–K+
Question. Which of the following statements about primary amines is ‘false’?
(a) Alkylamines are stronger bases than arylamines.
(b) Alkylamines are stronger bases than ammonia.
(c) Alkylamines react with nitrous acid to produce alcohols.
(d) Arylamines react with nitrous acid to produce phenols.
Question. When phenol and benzene diazonium chloride are coupled, the main product is :
Question. Which of the following compounds will dissolve in an alkali solution after it undergoes reaction with Hinsberg’s reagent?
(a) (CH3)3 N
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
Question. Reduction of nitrobenzene by which of the following reagent gives aniline?
Question. Which of the following cannot be prepared by Sandmeyer’s reaction?
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. Amongst the following, the strongest base in aqueous medium is ___________.
Question. The correct IUPAC name for CH2 = CHCH2 NHCH3 is
Question. Azo dye is prepared by the coupling of phenol and
(a) diazonium chloride
(c) benzoic acid
Question. In the nitration of benzene using a mixture of conc. H2SO4 and conc. HNO3, the species which initiates the reaction is ____________.
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. 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. 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. Methylamine reacts with HNO2 to form ____________.
(a) CH3—O—N == O
Question. The order of reactivity of halides with amines is
(a) RBr > RI > RCl
(b) RI > RBr > RCl
(c) RCl > RBr > RI
(d) RI > RCl > RBr
Question. Benzylamine may be alkylated as shown in the following equation:
C6H5CH2NH2 + R—X → C6H5CH2NHR
Which of the following alkylhalides is best suited for this reaction through SN1 mechanism?
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. 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. The total number of electrons around the nitrogen atom in amines are
Question. Amines play an important role in the survival of life. aturally they are found in
(d) All of these
Question. Propionamide on Hofmann degradation gives –
(a) methyl amine
(b) ethyl amine
(c) propyl amine
(d) ethyl cyanide
Question. Treatment of ammonia with excess of ethyl iodide will yield
(d) tetraethylammonium iodide
Question. Amines have
(a) Garlic odour
(b) Fishy odour
(c) Jasmine odour
(d) Bitter almonds odour
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. 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. Aniline is used
(a) in crimping of wool
(b) in dyeing industry
(c) in making of glue
(d) in fast drying vanish
Question. Reaction of aniline with benzaldehyde is
Question. Which of the following statements is not correct regarding aniline?
(a) It is less basic than ethylamine
(b) It can be steam-distilled
(c) It reacts with sodium to give hydrogen
(d) It is soluble in water
Question. Aniline and other arylamines are usually colourless but get coloured on storage due to___________.
(d) atmospheric oxidation
Question. A primary amine is formed by an amide on treatment with bromine and alkali. The primary amine has
(a) 1 carbon atom less than amide
(b) 1 carbon atom more than amide
(c) 1 hydrogen atom less than amide
(d) 1 hydrogen atom more than amide
We hope the above multiple choice questions for Class 12 Chemistry for Chapter 13 Amines provided above with answers based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS are really useful for you. Amines is an important chapter in Class 12 as it provides very strong understanding about this topic. Students should go through the answers provided for the MCQs after they have themselves solved the questions. All MCQs have been provided with four options for the students to solve. These questions are really useful for benefit of class 12 students. Please go through these and let us know if you have any feedback in the comments section.