CBSE Class 12 Chemistry Amines Worksheet Set C

Read and download free pdf of CBSE Class 12 Chemistry Amines Worksheet Set C. Download printable Chemistry Class 12 Worksheets in pdf format, CBSE Class 12 Chemistry Unit 13 Amines Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Chemistry Class 12 Assignments and practice them daily to get better marks in tests and exams for Class 12. Free chapter wise worksheets with answers have been designed by Class 12 teachers as per latest examination pattern

Unit 13 Amines Chemistry Worksheet for Class 12

Class 12 Chemistry students should refer to the following printable worksheet in Pdf in Class 12. This test paper with questions and solutions for Class 12 Chemistry will be very useful for tests and exams and help you to score better marks

Class 12 Chemistry Unit 13 Amines Worksheet Pdf

AMINES
 
1 Which one of the following can be prepared by Gabriel phthalimide synthesis?
(a) Aniline
(b) o-Toluidine
(c) Benzylamine
(d) N-Methyl ethanamine
 
2 The order of basic strength of amines in aqueous solution is
(a) (CH3)3N > (CH3)2NH > CH3NH2 > NH3
(b) CH3NH2 > (CH3)2 NH > (CH3)3N > NH3
(c) NH3 > (CH3)3N > (CH3)2NH > CH3NH2
(d) (CH3)2NH > CH3NH2 > (CH3)3N > NH3
 
3 Which of the following is a 3° amine?
(a) 1-methylcyclohexylamine
(b) Triethyl amine
(c) tert-butylamine
(d) N-methylaniline
 
4 The correct IUPAC name for CH2 = CHCH2 NHCH3 is
(a) Allylmethylamine
(b) 2-amino-4-pentene
(c) 4-aminopent-l-ene
(d) N-methylprop-2-en-l-amine
 
5 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
 
6 Aniline is less basic than ethylamine. This is due to
(a) Conjugation of lone pair of nitrogen with the ring
(b) The insoluble nature of aniline
(c) More Kfc value of aniline
(d) Hydrogen bonding
 
7 Hinsberg’s reagent is
 
CBSE Class 12 Chemistry Amines Worksheet Set C 1
 
8 NH2 group in aniline is
(a) Ortho and meta directing
(b) ortho,para and Meta directing
(c) Ortho and para directing
(d) Para directing
 
9 An organic compound A on reduction gives compound B which on reaction with chloroform and potassium hydroxide forms C. The compound C on catalytic reduction gives N-methylaniline. The compound A is
1. nitrobenzene
2. nitromethane
3. methylamine
4. aniline
 
10 An aromatic primary amine with cold nitrous acid leads to the formation of:
(a) alcohol
(b) nitrite
(c) diazonium salt
(d) benzene
 
11 The nitration of benzene with fuming HNO3 will give:
(a) Trinitrobenzne
(b) 1,3-dinitrobenzene
(c) picric acid
(d) 1,4-dinitrobenzene
 
12 The compound obtained by heating a mixture of primary amine and chloroform with ethanolic pottasium hydroxide (KOH) is
(a) an alkyl isocyanide
(b) an alkyl halide
(c) an amide
(d) an amide and nitro compound
 
13 Aromatic amines are ____ bases than ammonia, due to the ____ nature of the aryl group.
a) stronger, electron donating
b) weaker, electron donating
c) stronger, electron withdrawing
d) weaker, electron withdrawing
 
14 Pick out the correct statement regarding Gabriel phthalimide synthesis.
a) Gabriel synthesis is used for the preparation of secondary amines.
b) Potassium phthalimide, on heating with alkyl halide gives N-alkylphthalimide.
c) N-Alkylphthaliimide, on acidic hydrolysis gives the primary amine.
d) Aryl halides undergo nucleophilic substitution with potassium phthalimide to form the aromatic primary amine.
 
15 The order of basicity of amines in the gaseous phase is ____.
a) 3 o amine >2 o amine >1 o amine > NH3
b) NH3 >3 o amine >2 o amine >1 o amine
c) 3 o amine <2 o amine < 1o amine <NH3
d) 3 o amine < 2 o amine <NH3 <1 o amine
 
FILL IN THE BLANKS
 
1 The pKb of N,N-Dimethyl aniline is ____________ than aniline
 
2 CH3CH2NH2 has ____________ boiling point than (CH3)2NH.
 
3 _________________is the reagent used inHoffmann Bromamide Degradation reaction
 
4 The gas evolved when methylamine reacts with nitrous acid is __________
 
5 Reduction of aromatic nitro compounds using Fe and HCl gives __________
 
6 Aniline reacts with hydrochloric acid to form ____
 
7 The amides, on reduction with LiAlH4, give ____
 
8 Amines have an unshared pair of electrons on nitrogen atom due to which they behave as ____.
 
9 ____ the value of Kb or ____ the value of pKb, stronger is the base.
 
10 The IUPAC name of NH2−CH2−CH = CH2 is ____.
 
ASSERTION REASON QUESTIONS
 
1 Assertion: Acetanilide is less basic than aniline.
   Reason: Acetylation of aniline results in decrease of electron density on nitrogen.
 
2 Assertion: Only a small amount of HCl is required in the reduction of nitro compounds with iron scrap and HCl in the presence of steam.
   Reason: FeCl2 formed gets hydrolysed to release HCl during the reaction.

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CBSE Class 12 Chemistry Amines Worksheet Set C 2


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CBSE Class 12 Chemistry Unit 13 Amines Worksheet

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