CBSE Class 12 Chemistry Amines Worksheet Set B

Read and download free pdf of CBSE Class 12 Chemistry Amines Worksheet Set B. 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

QUESTION BANK
Amines
1. Write the IUPAC names of the following.(one mark each )
 
i. (CH3)2CHNH2
 
ii. C6H5NHCH3
 
iii. (CH3CH2)2NCH3
 
iv. (CH3)3CNH2
 
v. m-BrC6H4NH2
 
vi. C6H5NHCOCH3
 
vii. NH2-CH2CH2-CH2-CH=CH2
 
2. Complete the following reaction equations (one mark each )
 
i. C6H5N2Cl + H3PO2+ H2O→
 
ii. C6H5NH2 + Br2 (aq) →
 
iii. C6H5N2Cl + CH3COCl →
 
iv. C6H5NH2 + HNO2
 
v. RNH2 + CHCl3+ KOH→
 
3. How will you bring about the following conversions? (one mark each)
 
i. Benzene to Aniline
 
ii. Aniline to benzonitrile
 
iii. Ethanoic acid to ethanamine
 
iv. p-Toluidine to 2-Bromo-4-methylaniline.
 
v. Methylbromide to ethanamine
 
vi. Ethylamine to methylamine
 
vii. Benzene to sulphanilic acid
 
viii. Hexanenitrile to 1-aminopentane.
 
4. Giving an example of each describe the following reactions : (each carries one mark)
 
i. Hoffman bromamide reaction
 
ii. Gabriel phthalimide synthesis
 
iii. Gatterman reaction
 
iv. Coupling reaction
 
v. Hoffman’s ammonolysis
 
5. Give one chemical test to distinguish between the following pairs of compounds : (one mark each)
 
i. Methylamine and dimethylamine
 
ii. Secondary and tertiary amines
 
iii. Ethylamine and aniline
 
iv. Aniline and benzylamine
 
v. Methylamine and methanol
 
vi. Methylamine and N, N-Dimethylamine
 
vii. Ethanol and ethanamine
 
6. Explain why : (one mark each)
 
i. The C–N–C bond angle in trimethyl amine is 108°
 
ii. The quaternary ammonium salts having four different alkyl groups are optically active
 
iii. Alkylamines are more basic than ammonia
 
iv. Aniline cannot be prepared by Gabriel phthalimide synthesis
 
v. Garbrielphthalimide synthesis is preferably used for synthesising primary amines.
 
vi. Ethylamine is soluble in water but aniline is not
 
vii. Aniline is soluble in dilute HCl.
 
viii. Amines have lower boiling point than alcohols of comparable molecular masses.
 
ix. 1° Amines have higher boiling points than 2° amines which in turn are higher boiling than 3° amines.
 
x. The pKb value of benzeneamine is 9.33 while that of ammonia is 4.75.
 
xi. Aniline does not undergo Friedel Crafts reaction.
 
xii. Aniline readily forms 2, 4, 6-tribronoaniline on reaction with bromine water.
 
xiii. Sulphanillicacid is soluble in water.
 
xiv. Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.
 
7. Arrange the following substances
 
NH3, C2H5NH2, C6H5NH2, (C2H5)2NH
 
i. In an increasing order of basic strength
ii. In a decreasing order of basic strength in gas phase
 
8. Primary, secondary and tertiary amines can be distinguished by using Hinsberg’s reagent.
 
i. What is Hinsberg’s reagent?
ii. How will you distinguish primary, secondary and tertiary amines using this reagent.?
 

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CBSE Class 12 Chemistry Unit 13 Amines Worksheet

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