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Colloids : Classification and Preparation Test 04 - Surface Chemistry (Class 12, CBSE) Class 12 Notes | EduRev

Class 12 : Colloids : Classification and Preparation Test 04 - Surface Chemistry (Class 12, CBSE) Class 12 Notes | EduRev

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CBSE TEST PAPER-04 
CLASS - XII CHEMISTRY (Surface chemistry) 
Topic:-Colloids – classification and preparation 
1. What are colloids? [1] 
2. What is the range of particle size in colloids? [1] 
3. What is dispersed phase and dispersion medium in [3] 
(i) sol  (ii) Aerosol  (iii) Foam? 
4. Give two examples of solid Sol and Gel? [1] 
5. Differentiate between lyophobic and lyophillic sol? [3] 
6. Colloid is a state not a substance. Explain? [1] 
7. Give two examples of substances that form: – [2] 
(a) Hydrophobic sol. 
(b) Hydrophilic sol. 
8. Differentiate between multimolucular and macromolecular colloid? [2] 
9. What are associated colloids? Give an example? [1] 
10. What is CMC and Kraft’s temperature? [1] 
11. Write the equation for formation of [2] 
(a) Sulphur sol. 
(b) Ferric hydroxide sol. 
12. Define the term peptization? [1]

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