This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 2 Is Matter Around Us Pure – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A solution of iodine in alcohol known as 'tincture of iodine', has ..... as the solute and alcohol (liquid) as the solvent. A) IODINE. B) WATER. C) ALCOHOL. D) SPIRIT. Show Answer Correct Answer: A) IODINE. 2. Which of the following are homogeneous in nature?(i) ice (ii) wood (iii) soil (iv) air A) (i) and (iii). B) (ii) and (iv). C) (i) and (iv). D) (iii) and (iv). Show Answer Correct Answer: C) (i) and (iv). 3. 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) An element. C) A molecule. D) A mixture. Show Answer Correct Answer: B) An element. 4. Wood burning is an example of A) Matter changes. B) Burning. C) Physical changes. D) Chemical change. Show Answer Correct Answer: D) Chemical change. 5. If you change a substance into a new substance ..... A) Partial Change. B) Physical Change. C) Chemical Change. D) Freezing. Show Answer Correct Answer: C) Chemical Change. 6. Q-5 What is the Formula to calculate the Mass By Mass % of Solution? A) % = Mass of Solution / Mass of Solute X 100. B) % = Mass of Solution / Mass of Solvent X 100. C) % = Mass of Solute / Mass of Solution X 1000. D) % = Mass of Solute / Mass of Solution X 100. Show Answer Correct Answer: D) % = Mass of Solute / Mass of Solution X 100. 7. 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. 8. When dispersion medium is gas and dispersed phase may be solid or liquid, that colloidal system is ..... A) Aerosol. B) Foam. C) Sol. D) Emulsion. Show Answer Correct Answer: A) Aerosol. 9. 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. 10. 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) Simple distillation. B) Sublimation. C) Centrifugation. D) Fractional distillation. Show Answer Correct Answer: B) Sublimation. 11. Mixture of water and milk shows ..... effect A) Solubility. B) Tyndall. C) Diffusion. D) Brightening. Show Answer Correct Answer: B) Tyndall. 12. 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. 13. 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. 14. 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. 15. Which one of these is not a chemical change? A) Conversion of milk into curd. B) Burning of magnesium ribbon in air. C) Rusting of iron nails. D) Dissolving salt in water. Show Answer Correct Answer: D) Dissolving salt in water. 16. In aerated drinks like soda water, gas acting as solute is ..... A) Nitrogen. B) Hydrogen. C) Oxygen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 17. Aerated drinks like soda water etc., are gas in liquid solutions. These contain ..... (gas) as solute and water (liquid) as solvent A) CARBON DIOXIDE. B) OXYGEN. C) NITROGEN. D) HELIUM. Show Answer Correct Answer: A) CARBON DIOXIDE. 18. 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. 19. The type of colloid in which both dispersed phase and dispersion medium is liquid is called ..... A) Aerosol. B) Foam. C) Sol. D) Emulsion. Show Answer Correct Answer: D) Emulsion. 20. 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. 21. Tyndall effect is observed in both suspensions and colloids. A) True. B) Never. C) Sometimes. D) False. Show Answer Correct Answer: D) False. 22. Which of the following is an Example of Colloid A) Milk. B) Jelly. C) Honey. D) Iodine. Show Answer Correct Answer: A) Milk. 23. When no more solute can be dissolved in solution at given temperature is called ..... solution. A) Unsaturated. B) Saturated. C) Homogeneous. D) Heterogeneous. Show Answer Correct Answer: B) Saturated. 24. 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. 25. Carbon is an example of ..... - A) Metal. B) Non-metal. C) Metalloid. D) Compound. Show Answer Correct Answer: B) Non-metal. ← PreviousNext →Related 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 3Class 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 8Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 9Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 10Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books