This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 2 Is Matter Around Us Pure – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This is a type of heterogeneous mixture in which the particles are dispersed and do not settle out. A) Alloy. B) Solution. C) Suspension. D) Colloid. Show Answer Correct Answer: D) Colloid. 2. How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride? A) Precipitation. B) Sublimation. C) Chromatography. D) Cetrifugation. Show Answer Correct Answer: B) Sublimation. 3. Choose a metal which is soft. A) Sodium. B) Copper. C) Graphite. D) Gold. Show Answer Correct Answer: A) Sodium. 4. What does 'pure' mean in Chemistry? A) Composed of multiple elements. B) Composed of a single element. C) Composed of multiple compounds. D) Composed of a single compound. Show Answer Correct Answer: B) Composed of a single element. 5. How much lime is obtained by heating 400 g of limestone? A) 224 g. B) 220 g. C) 400 g. D) 320 g. Show Answer Correct Answer: A) 224 g. 6. Are made from a combination of 2 or more different elements ..... A) Elements. B) Pure Substances. C) Compounds. D) None of the above. Show Answer Correct Answer: C) Compounds. 7. What type of mixture is soil? A) Homogeneous. B) Heterogeneous. C) Elementary. D) Compound. Show Answer Correct Answer: B) Heterogeneous. 8. Brass is an alloy of molten Copper in ..... A) Solid Zinc. B) Molten Zinc. C) Gaseous Zinc. D) Molten Tin. Show Answer Correct Answer: B) Molten Zinc. 9. What is the volume of solution in which mass of solute = 50g and mass by volume percentage of the solution = 50% A) 100ml. B) 10ml. C) 1000ml. D) 200ml. Show Answer Correct Answer: A) 100ml. 10. A chemical change is also called A) Chemical reaction. B) Reactors. C) Flammable Reaction. D) Flame resistant. Show Answer Correct Answer: A) Chemical reaction. 11. Who was the first scientist to use the term element? A) Robert Brown. B) Robert Broyle. C) Robert Boyle. D) Antoine Lavoisier. Show Answer Correct Answer: C) Robert Boyle. 12. What is found when two elements react with each other? A) Forms a compound. B) Nothing happens. C) Forms a mixture. D) Forms an another element. Show Answer Correct Answer: A) Forms a compound. 13. A mixture that is uniform and well mixed is ..... A) Homogeneous. B) Hetergeneous. C) Pure substance. D) Compoud. Show Answer Correct Answer: A) Homogeneous. 14. Which of the following is a pure substance? A) Air. B) Distilled water. C) Steel. D) Brass. Show Answer Correct Answer: B) Distilled water. 15. Cloud is an example of A) Liquid dispersed in a gas. B) Solid dispersed in a gas. C) Liquid dispersed in a gas. D) Solid dispersed in a solid. Show Answer Correct Answer: A) Liquid dispersed in a gas. 16. Burning of candle is a A) Physical change. B) Chemical change. C) Both physical and chemical change. D) None of the above. Show Answer Correct Answer: C) Both physical and chemical change. 17. When colloids are subjected to an electrical field particles move towards an electrode and precipitate. Name the process. A) Peptization. B) Electrophoresis. C) Brownian Movement. D) Tyndall Effect. Show Answer Correct Answer: B) Electrophoresis. 18. The components of water can be separated by A) Physical methods. B) Chemical methods. C) Both. D) They can't be separated. Show Answer Correct Answer: B) Chemical methods. 19. A mixture of water in alcohol is an example of ..... A) Homogeneous mixture. B) Heterogeneous mixture. C) Colloid. D) Suspension. Show Answer Correct Answer: A) Homogeneous mixture. 20. Which technique is used in diagnostic lab to test the urine and blood? A) Sublimation. B) Centrifugation. C) Evaporation. D) Magnetic Separation. Show Answer Correct Answer: B) Centrifugation. 21. State True or False:We can separate the different components of a homogeneous mixture using filtration technique? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 22. How many H atoms are in water? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 23. We can separate kerosene and water using A) Evaporation method. B) A separating funnel. C) A centrifuge. D) Filtration method. Show Answer Correct Answer: B) A separating funnel. 24. Which of the following are homogeneous in nature?(1) Ice (2) Wood (3) Soil (4) Air A) And (3). B) And (4). C) And (4). D) And (4). Show Answer Correct Answer: B) And (4). 25. In foam the dispersed phase(also called the solute of colloidal solution) is A) Liquid. B) Solid. C) Gas. D) Plasma. Show Answer Correct Answer: C) Gas. ← 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 5Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 6Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 7Class 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