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Free download in PDF Class 12 Chemistry Chapter 13 Amines Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Secondary amines can be prepared by
[A]
reduction of nitro compounds
[B]
oxidation of N-substituted amides
[C]
reduction of isonitriles
[D]
reduction of nitriles
Answer: reduction of isonitriles
(2)
Which of the following amides will give ethylamine on reaction with sodium hypobromide?
[A]
Butanamide
[B]
Propanamide
[C]
Acetamide
[D]
Benzamide
(3)
Benzoic acid is treated with SOCl2 and the product (X) formed is reacted with ammonia to give (Y). (Y) on reaction with Br2 and KOH gives (Z). (Z) in the reaction is
[A]
aniline
[B]
chlorobenzene
[C]
benzamide
[D]
benzoyl chloride
(4)
Amine that cannot be prepared by Gabricl-Phthalmidie synthesis is
[A]
aniline
[B]
benzyl amine
[C]
methyl amine
[D]
iso-butylamine
(5)
Tertiary amines have lowest boiling points amongst isomeric amines because
[A]
they have highest molecular mass
[B]
they do not form hydrogen bonds
[C]
they are more polar in nature
[D]
they are most basic in nature
Answer: they do not form hydrogen bonds
(6)
Which of the following amines will give carbylatnine reaction?
[A]
(C2H5)3N
[B]
(C2H5)2NH
[C]
C2H5NH2
[D]
C3H7NHC2H35
(7)
Primary and secondary amines are distinguished by
[A]
Br2/ROH
[B]
HClO
[C]
HNO2
[D]
NH3
(8)
Arrange the following compounds in increasing order of basicity:
CH3NH2, (CH3)2 NH, NH3, C6H5NH2
[A]
C6H5NH2 < NH3 < (CH3)2NH < CH3NH2
[B]
CH3NH2 < (CH3)2NH < NH3 < C6H5NH2
[C]
C6H5NH2 <NH3 < CH3NH2<(CH3)2NH
[D]
(CH3)2NH < CH3NH2 <NH3 < C6H5NH2
Answer: C6H5NH2 <NH3 < CH3NH2<(CH3)2NH
(9)
Which of the following species are involved in the carbvlamine test?
(i) RNC
(ii) CHCl3
(iii) COCl2
(iv) NaNO2 + HCl
[A]
(i) and (iv)
[B]
(i) and (ii)
[C]
(ii) and (iv)
[D]
(ii) and (iii)
(10)
Which of the following from isocyanide on reaction with CHCl and KOH?
[A]
C6H5NHCH3
[B]
CH3C6H4NH2
[C]
C6H5NHC4H9
[D]
C6H5N (C2H5)2
(11)
Which of the following is used as Hinsberg’s reagent?
[A]
C6H5SO2Cl
[B]
C6H5SO3H
[C]
C6H5NHCH3
[D]
C6H5COCH3
(12)
Electrophilic substitution of aniline with bromine water at room temperature gives
[A]
2-bromoaniline
[B]
3-bromoaniline
[C]
2, 4, 6-tribromoaniline
[D]
3, 5, 6-tribromoaniline
Answer: 2, 4, 6-tribromoaniline
(13)
Among the compounds C3H7NH2, CH3NH2, C2H5NH2, and C6H5NH2. Which is the least basic compound?
[A]
CH3NH2
[B]
C2H5NH2
[C]
C3H7NH2
[D]
C6H5NH2
(14)
Anilinium hydrogensulphate on heating with sulphuric acid at 453-473 K produces
[A]
sulphanilic acia
[B]
benzenesulphonic acid
[C]
aniline
[D]
anthranilic acid
(15)
In this reaction acetamide is converted to methanamine
[A]
Gabriel phthalimide synthesis
[B]
Carbylamine reaction
[C]
Stephen’s reaction
[D]
Hoffmann bromamide reaction
Answer: Hoffmann bromamide reaction
(16)
Which of the following is true for the basicity of amines?
[A]
Alkylamines are generally less basic than arylamines because N is sp hybridised
[B]
Arylamines are generally more basic than alkylamines due to aryl group
[C]
Arylamines are generally less basic than alkylamines due to delocalisation of lone pair of electrons in the benzene ring
[D]
Alkylamines are generally less basic than arylamines because lone pair of electrons on N in the arylamines are not delocalised in the benzene ring
Answer: Arylamines are generally less basic than alkylamines due to delocalisation of lone pair of electrons in the benzene ring
(17)
How many structural isomers are possible for C3H9N?
(18)
Which of the following is incorrect for primary amines?
[A]
On reaction with nitrous acid alkylamines produce alcohol
[B]
On reaction with nitrous acid arylamines produce phenol
[C]
Alkylamines are more basic than ammonia
[D]
Alkylamines are more basic than arylamines
Answer: On reaction with nitrous acid arylamines produce phenol
(19)
Aniline is less basic than
[A]
Benzylamine
[B]
Triphenylamine
[C]
p-Nitroaniline
[D]
Diphenylamine
(20)
Which of the following is formed when an alkyl primary amine reacts with nitrous acid?
[A]
Alkyl nitrite
[B]
Secondary amine
[C]
Nitroalkane
[D]
Alcohol
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