This quiz works best with JavaScript enabled. Home > Cbse > Class 9 > Science > Is Matter Around Us Pure > Class 9 Science Chapter 2 Is Matter Around Us Pure – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A liquid and a solid are found together in a single phase. What is this known as? A) Solvent. B) Emulsion. C) Solution. D) Solute. Show Answer Correct Answer: C) Solution. 2. The process used to separate oil and water is: A) Chromatography. B) Distillation. C) Separating funel. D) Sublimation. Show Answer Correct Answer: C) Separating funel. 3. Salt can be separated from water by A) Centrifugation. B) Distillation. C) Chromatography. D) Evaporation. Show Answer Correct Answer: D) Evaporation. 4. What is the method suitable to obtain pure water from seawater. A) Simple distillation. B) Filtration. C) Evaporation to dryness. D) Fractional distillation. Show Answer Correct Answer: A) Simple distillation. 5. Which of the following is a universal solvent A) Water. B) Acetone. C) Petrol. D) None of these. Show Answer Correct Answer: A) Water. 6. Air is a mixture of gas in gas. Air is a homogeneous mixture of a number of gases. Its two main constituents are:OXYGEN IS ..... and nitrogen (78%). A) 90%. B) 21%. C) 20%. D) 70%. Show Answer Correct Answer: B) 21%. 7. What is a Solution? A) A homogeneous mixture of two or more chemically non-reacting substances. B) A homogeneous mixture of two or more chemically reacting substances. C) All the above. D) None of the above. Show Answer Correct Answer: A) A homogeneous mixture of two or more chemically non-reacting substances. 8. If no more solute can be dissolved in a solvent at a given temperature, it is which type of solution? A) Saturated solution. B) Colloid. C) Suspension. D) True solution. Show Answer Correct Answer: A) Saturated solution. 9. Colloids can be separated by A) Filtration. B) Sedimentation. C) Distillation. D) Centrifugation. Show Answer Correct Answer: D) Centrifugation. 10. Two chemical species X and Y combine together to form a product P which contains both X and YX + Y $\rightarrow$ A) (i), (ii) and (iii),. B) (i), (ii) and (iv). C) (ii), (iii) and (iv). D) (i), (iii) and (iv). Show Answer Correct Answer: D) (i), (iii) and (iv). 11. State True or False:A homogeneous solution does not show Tyndall effect? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Conversion of milk into curd is not a physical change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. Emulsion is a colloidal solution of liquid in A) Solid. B) Gases. C) Liquid. D) None of these. Show Answer Correct Answer: C) Liquid. 14. A mixture of milk and water is ..... mixture and ..... show Tyndall effect. A) Homogeneous, will. B) Homogeneous, will not. C) Heterogeneous, will. D) Heterogeneous, will not. Show Answer Correct Answer: C) Heterogeneous, will. 15. How will you seperate oxygen from a mixture of liquid air? A) Fractional distillation. B) Seperating funnel. C) Centrifugation. D) Distillation. Show Answer Correct Answer: A) Fractional distillation. 16. HOW MANY ELEMENTS EXIST ROUGHLY ANDHOW MANY ELEMENTS ARE NATURALLY OCCURING A) 100+, 97. B) 180+, 83. C) 180+, 76. D) 100+, 92. Show Answer Correct Answer: D) 100+, 92. 17. H2 would be a ..... A) Solid. B) Compound. C) Element. D) None of the above. Show Answer Correct Answer: C) Element. 18. What is the molarity of a 2 liter solution containing 5 moles of NaCl? A) 2.5 moles/liter. B) 10 moles/liter. C) 2.5. D) 0.4. Show Answer Correct Answer: A) 2.5 moles/liter. 19. The method used to separate a dye from blue ink is called ..... A) Evaporation. B) Sedimentation. C) Crystallisation. D) Filteration. Show Answer Correct Answer: A) Evaporation. 20. Non uniform compositions of solutions called ..... solutions. A) Homogeneous. B) Mixer. C) Heterogeneous. D) Texture. Show Answer Correct Answer: C) Heterogeneous. 21. Alloy is an example of ..... A) Colloid. B) Suspension. C) Gel. D) Solution. Show Answer Correct Answer: D) Solution. 22. The solute particles cannot be separated from the mixture by the process of ..... A) SEDIMENTATIION. B) FILTRATION. C) Decantation. D) MANUALLY SEPARATING. Show Answer Correct Answer: B) FILTRATION. 23. A solution of iodine in alcohol known as 'tincture of iodine', has ..... as the solute and alcohol (liquid) as the solvent. A) SPIRIT. B) IODINE. C) WATER. D) ALCOHOL. Show Answer Correct Answer: B) IODINE. 24. A pure substance which is made up of only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is referred to as A) A compound. B) A mixture. C) A molecule. D) An element. Show Answer Correct Answer: D) An element. 25. Wood burning is an example of A) Chemical change. B) Burning. C) Physical changes. D) Matter changes. Show Answer Correct Answer: A) Chemical change. 26. If you change a substance into a new substance ..... A) Chemical Change. B) Freezing. C) Physical Change. D) Partial Change. Show Answer Correct Answer: A) Chemical Change. 27. Q-5 What is the Formula to calculate the Mass By Mass % of Solution? A) % = Mass of Solute / Mass of Solution X 100. B) % = Mass of Solution / Mass of Solute X 100. C) % = Mass of Solute / Mass of Solution X 1000. D) % = Mass of Solution / Mass of Solvent X 100. Show Answer Correct Answer: A) % = Mass of Solute / Mass of Solution X 100. 28. Suspension can be separated by filtration. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 29. When dispersion medium is gas and dispersed phase may be solid or liquid, that colloidal system is ..... A) Aerosol. B) Foam. C) Emulsion. D) Sol. Show Answer Correct Answer: A) Aerosol. 30. Blood and sea water are A) Blood is a mixture whereas sea water is a compound. B) Blood is a compound and sea water is a mixture. C) Both are mixtures. D) Both are Compounds. Show Answer Correct Answer: C) Both are mixtures. 31. We know that solid sodium chloride on heating changes to liquid phase whereas solid ammonium chloride changes to vapour phase. If you are given a mixture of solid sodium chloride and solid ammonium chloride, which separation technique will you use to separate these? A) Sublimation. B) Simple distillation. C) Centrifugation. D) Fractional distillation. Show Answer Correct Answer: A) Sublimation. 32. Mixture of water and milk shows ..... effect A) Solubility. B) Tyndall. C) Diffusion. D) Brightening. Show Answer Correct Answer: B) Tyndall. 33. You are given a mixture of four immiscible liquids with different densities. Can you separate these using separating funnel? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 34. Define a pure substance? A) A pure substance consists of a single type of particles and constant composition. B) A pure substance consists of two different types of particles with variable composition. C) A pure substance consists of many types of particles and different composition. D) None of the above. Show Answer Correct Answer: A) A pure substance consists of a single type of particles and constant composition. 35. Name the mixture whose particles are large enough to scatter light: A) True solution. B) Homogenous solution. C) Colloid. D) All of the above. Show Answer Correct Answer: C) Colloid. 36. Which one of these is not a chemical change? A) Conversion of milk into curd. B) Burning of magnesium ribbon in air. C) Dissolving salt in water. D) Rusting of iron nails. Show Answer Correct Answer: C) Dissolving salt in water. 37. In aerated drinks like soda water, gas acting as solute is ..... A) Hydrogen. B) Nitrogen. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: C) Carbon dioxide. 38. Aerated drinks like soda water etc., are gas in liquid solutions. These contain ..... (gas) as solute and water (liquid) as solvent A) NITROGEN. B) CARBON DIOXIDE. C) HELIUM. D) OXYGEN. Show Answer Correct Answer: B) CARBON DIOXIDE. 39. A mixture of sulphur and carbon disulphide is A) Heterogeneous and shows Tyndall effect. B) Homogeneous and shows Tyndall effect. C) Heterogeneous and does not show Tyndall effect. D) Homogeneous and does not show Tyndall effect. Show Answer Correct Answer: C) Heterogeneous and does not show Tyndall effect. 40. The type of colloid in which both dispersed phase and dispersion medium is liquid is called ..... A) Sol. B) Foam. C) Aerosol. D) Emulsion. Show Answer Correct Answer: D) Emulsion. 41. What is a homogeneous mixture? A) A mixture that consists of two or more substances. B) A mixture in which the substances are evenly distributed. C) A mixture that consists of a single substance. D) A mixture in which the substances are not evenly distributed. Show Answer Correct Answer: B) A mixture in which the substances are evenly distributed. 42. Tyndall effect is observed in both suspensions and colloids. A) Never. B) False. C) True. D) Sometimes. Show Answer Correct Answer: B) False. 43. Which of the following is an Example of Colloid A) Iodine. B) Honey. C) Jelly. D) Milk. Show Answer Correct Answer: D) Milk. 44. When no more solute can be dissolved in solution at given temperature is called ..... solution. A) Unsaturated. B) Heterogeneous. C) Saturated. D) Homogeneous. Show Answer Correct Answer: C) Saturated. 45. Is rain water or distilled water a pure substance? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 46. Carbon is an example of ..... - A) Metal. B) Non-metal. C) Metalloid. D) Compound. Show Answer Correct Answer: B) Non-metal. 47. A solution contains 50 g common salt in 200g of water. Calculate the concentration of the solution. A) 16.6%. B) 14.5%. C) 20%. D) 25%. Show Answer Correct Answer: C) 20%. 48. A mixture that is evenly distributed is called ..... A) Homogenous. B) Heterogenous. C) Heterozygous. D) Periodic. Show Answer Correct Answer: A) Homogenous. 49. Particles size in colloids range from A) 1nm-1000nm. B) 50nm-5000nm. C) 1nm-100nm. D) 10nm-1000nm. Show Answer Correct Answer: A) 1nm-1000nm. 50. Homogeneous solutionmay separated by ..... A) Filtration. B) Physical process. C) Chemical process. D) Evaporation. Show Answer Correct Answer: C) Chemical process. 51. Elements such as gallium and cesium become liquid at a room temprature of ..... A) 303 K. B) 330 K. C) 300 K. D) 304 K. Show Answer Correct Answer: A) 303 K. 52. If the particles of a mixture can be seen by naked eyes, it is ..... A) Suspension. B) Solution. C) Colloid. D) Compound. Show Answer Correct Answer: A) Suspension. 53. What is carbon dioxide A) Solid. B) Liquid. C) Don't know. D) Gas. Show Answer Correct Answer: D) Gas. 54. A homogeneous mixture of two or more substance A) Mixture. B) Solution. C) Sols. D) Heterogeneous solution. Show Answer Correct Answer: B) Solution. 55. Which of the following will have same type of particles? A) Polluted Air. B) Milk. C) Clean air. D) Iron. Show Answer Correct Answer: D) Iron. 56. What is an Emulsion? A) Colloid fromed when Liquid is mixed in liquid. B) Colloid fromed when Gas is mixed in gas. C) Colloid fromed when Liquid is mixed in gas. D) Colloid fromed when Solid is mixed in liquid. Show Answer Correct Answer: A) Colloid fromed when Liquid is mixed in liquid. 57. What does the term 'matter around us' refer to in Chemistry? A) The behavior of particles in a vacuum. B) Substances that can be touched, seen, and felt. C) The study of quantum mechanics. D) The properties of elements. Show Answer Correct Answer: B) Substances that can be touched, seen, and felt. 58. Which one of the following scrap metal cannot be separated by magnetic separation? A) Steel. B) Chromium. C) Nickel. D) Cobalt. Show Answer Correct Answer: A) Steel. 59. A mixture of chalk powder in water is an example of ..... A) Suspension. B) Solution. C) Colloid. D) Brownian motion. Show Answer Correct Answer: A) Suspension. 60. What is an example of a pure substance? A) Saltwater. B) Oxygen gas. C) Copper wire. D) Iron. Show Answer Correct Answer: D) Iron. ← PreviousNext →Related QuizzesScience QuizzesClass 9 QuizzesClass 9 Science Chapter 2 Is Matter Around Us Pure Quiz 1Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 2Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 4Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 5Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 6Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 7 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books