CBSE Class 12 Chemistry Surface Chemistry Worksheet Set E

Read and download free pdf of CBSE Class 12 Chemistry Surface Chemistry Worksheet Set E. Download printable Chemistry Class 12 Worksheets in pdf format, CBSE Class 12 Chemistry Unit 5 Surface Chemistry 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 5 Surface Chemistry 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 5 Surface Chemistry Worksheet Pdf

SURFACE CHEMISTRY
 
1. Which of the following electrolyte will havemaximum flocculation value for Fe(OH)3 sol?
a) NaCl   b) Na2S   c) (NH4)3PO4    d) K2SO4
 
2. Which property of colloidal solution is independent of charge on the colloidal particles?
a) Electro-osmosis b)Coagulation c)Tyndall effect d)Electrophoresis
 
3. Which one of the followings forms micelles in aqueous solution above certain concentration?
a) Dodecyl trimethyl ammonium chloride
b) Glucose
c) Urea
d) Pyridinium chloride
 
4. The basic principle of Cottrell's precipitator is
a) Le-Chatelier's principle
b) peptisation
c) neutralisation of charge on colloidal particles
d) scattering of light
 
5. Assertion –Reason type questions:
In the following questions a statement of assertion followed by a statement of reason is given,Choose the correct answer from the following choices.
(a) Both assertion and reason are correct statements and the reason is a correct explanation for assertion.
(b) Both assertion and reason are correct but reason is not a correct explanation for assertion.
(c) Assertion is correct but reason is incorrect.
(d) Assertion is wrong but reason is correct.
 
i. Assertion : Adsorption decreases with increase in temperature
   Reason : Adsorption is generally temperature dependent
ii. Assertion: A catalyst is more effective in finely divided form.
    Reason: Finely divided form has more surface area.
 
6. Give an example of shape selective catalyst.
 
7. What is the basic difference between adsorption and absorption?
 
8. Why are finely divided substances more effective as an adsorbent?
 
9. Why is the adsorption phenomenon always exothermic?
 
10. What is meant by shape selective catalysis?
 
11. Out of AlCl3 and NaCl, which is more effective in causing coagulation of a negative sol and why?
 
12. What is the difference between a colloidal solution and emulsion? What is the role of emulsifier in forming emulsion?
 
13. What are the characteristics of a solid catalyst?
 
14. What is activation of an adsorbent? How can it be achieved?
 
15. Differentiate between the following by giving examples.
a) Homogeneous and heterogeneous catalysis
b) Physical and chemical adsorption
c) Lyophobic and lyophilic colloids
 
16. What is the difference between multimolecular and macromolecular colloids?Give one example of each type. How associated colloids are different from these two types of colloids.
 
17. Explain how the phenomenon of adsorption finds application in each of the following processes:
a) Production of vacuum
b) Heterogeneous catalysis
c) Froth floatation process
 
18. Explain the following terms:
a) Tyndall effect
b) Electrophoresis
c) Dialysis
 
19. What happens when
a) Electric current is passed through a colloidal solution.
b) Solution of NaCl is added to a colloidal solution of Fe (OH)3.
c) An emulsion is subjected to centrifugation.


Please click on below link to download CBSE Class 12 Chemistry Surface Chemistry Worksheet Set B

CBSE Class 12 Chemistry Unit 5 Surface Chemistry Worksheet

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Worksheet for Chemistry CBSE Class 12 Unit 5 Surface Chemistry

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Unit 5 Surface Chemistry worksheet Chemistry CBSE Class 12

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Unit 5 Surface Chemistry CBSE Class 12 Chemistry Worksheet

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Worksheet for CBSE Chemistry Class 12 Unit 5 Surface Chemistry

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