This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The name of the sol if the dispersion medium is water A) Aquasol. B) Alcosol. C) Benzosol. D) Aerosol. Show Answer Correct Answer: A) Aquasol. 2. Which the following is not a colloidal system A) Latex. B) Hard water. C) Ink. D) Pumice stone. Show Answer Correct Answer: B) Hard water. 3. Dispersed phrase and dispersion medium in jellies are respectively A) Solid and liquid. B) Liquid and solid. C) Liquid and liquid. D) Solid and solid. Show Answer Correct Answer: B) Liquid and solid. 4. The formation of micelles takes place only above a temperature called A) Kraft temperature. B) Absolute Temperature. C) Critical temperature. D) None of the above. Show Answer Correct Answer: A) Kraft temperature. 5. Which one is a homogeneous mixture? A) Milk dissolved in water. B) Whipped Cream. C) Blood dissolved in water. D) Sodium Hypochlorite dissolved in water. Show Answer Correct Answer: D) Sodium Hypochlorite dissolved in water. 6. Fe3+ ions cogulate blood. This show blood contains colloidal particle bearing A) No charge. B) Positive charge. C) Negative charge. D) Either positive or negative charge. Show Answer Correct Answer: C) Negative charge. 7. WHICH OF THE FOLLOWING IS AN EXAMPLE OF ABSORPTION A) WATER ON SILICA GEL. B) WATER ON CALCIUM CHLORIDE. C) HYDROGEN ON FINELY DIVIDED NICKLE. D) OXYGEN ON METAL SURFACE. Show Answer Correct Answer: B) WATER ON CALCIUM CHLORIDE. 8. In Freundlich adsorption isotherm x/m = Kp1/n, the value of 'n' at low pressure is A) More than one. B) Less than one. C) Equal to one. D) From zero to one. Show Answer Correct Answer: C) Equal to one. 9. In gas masks, activated charcoal is used to ..... the toxic gases andvapours. A) Adsorb. B) Absorb. C) Desorb. D) Sorb. Show Answer Correct Answer: A) Adsorb. 10. Match the following1) Scale-Permanent hardness (a)2)Sludge-Temporary hardness (b)3)MgCl2-hard precipitate (c)4)Ca (HCO3)2-loose precipitate (d) A) 1-c, 2-d, 3-a, 4-b. B) 1-c, 2-b, 3-a, 4-d. C) 1-d, 2-c, 3-a, 4-b. D) 1-c, 2-d, 3-b, 4-a. Show Answer Correct Answer: A) 1-c, 2-d, 3-a, 4-b. 11. Which type of adsorption have high activation energy A) Chemical adsorption. B) Physical adsorption. C) Both. D) None of the above. Show Answer Correct Answer: A) Chemical adsorption. 12. Calgon is ..... A) Na3PO4. B) Na2(Na4(PO3)6. C) NaAlO2. D) Kerosene, agar-agar, gelatin, glue. Show Answer Correct Answer: B) Na2(Na4(PO3)6. 13. WHICH OF THE FOLLOWING WILL PRECIPITATE THE NEGATIVELY CHARGED COLLOID A) KCL. B) GLUCOSE. C) UREA. D) SOL. Show Answer Correct Answer: A) KCL. 14. Entropy during adsorption ..... A) Decreases. B) Increases. C) Remain Same. D) Cannot say. Show Answer Correct Answer: A) Decreases. 15. Electro disintegration method is used to obtain A) Non Ionic colloids. B) Metallic Colloids. C) Lyophilic colloids. D) Lyophobic colloids. Show Answer Correct Answer: B) Metallic Colloids. 16. Bredig's arc method is used for the preparation of colloidal soln of: A) Metal like silver, gold, etc. B) Organic compounds. C) Two liquids. D) Inorganic compounds. Show Answer Correct Answer: A) Metal like silver, gold, etc. 17. A colloidal system having a solid substance as a dispersion phase and liquid as a dispersion medium is classified as A) Solid sol. B) Gel. C) Emulsion. D) Sol. Show Answer Correct Answer: D) Sol. 18. How many layers are adsorbed in chemical adsorption? A) One. B) Two. C) Many. D) Zero. Show Answer Correct Answer: A) One. 19. Colloidal conditioning is an A) Boiler corrosion. B) External method. C) Internal method. D) Desalination method. Show Answer Correct Answer: B) External method. 20. Which type of adsorption is typically irreversible? A) Physisorption. B) Chemiabsorption. C) Chemisorption. D) Physical adsorption. Show Answer Correct Answer: C) Chemisorption. 21. What role does temperature play in the adsorption process? A) Lower temperatures generally favor adsorption. B) Temperature has no effect on adsorption. C) Higher temperatures always increase adsorption. D) Temperature only affects physisorption. Show Answer Correct Answer: A) Lower temperatures generally favor adsorption. 22. Critical Volume is directly proportional to A) A. B) B. C) R. D) Both a and b. Show Answer Correct Answer: B) B. 23. What kind of bond is involved in chemisorption? A) Ionic or covalent bonds. B) Hydrogen bonds. C) Van der Waals forces. D) Metallic bonds. Show Answer Correct Answer: A) Ionic or covalent bonds. 24. Identify the property of colloid related to Tyndall effect. A) Mechanical property. B) Colligative property. C) Optical property. D) Electrical property. Show Answer Correct Answer: C) Optical property. 25. S.I. unit of vander Waals constant b is m$^{3}$/mol A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 1Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 2Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 3Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 4Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 5Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 6Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 7Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 8Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 9Class 12 Chemistry (Part I) Chapter 5 Surface Chemistry Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books