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 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 15 % of alcohol solution means A) 15ml alcohol and 85 ml water. B) 15 ml alcohol and 100 ml of water. C) 15ml of water and 85 ml alcohol. D) None of these. Show Answer Correct Answer: A) 15ml alcohol and 85 ml water. 2. Which of the following is false about suspension A) Show tyndall effect. B) Settle down after some time. C) Is homogeneous. D) Its particles can be separated using filtration. Show Answer Correct Answer: C) Is homogeneous. 3. Milk is an example of ..... A) Pure substance. B) Solution. C) Colloid. D) Suspension. Show Answer Correct Answer: C) Colloid. 4. Q-2 What is the composition of BRASS? A) 50% zinc & 50% copper. B) 70% zinc & 30% copper. C) 40% zinc & 60% copper. D) 30% zinc & 70% copper. E) !!NON OF THE ABOVE!!. Show Answer Correct Answer: D) 30% zinc & 70% copper. 5. A solution of 200g contains 50g of solute. Calculate the (i) mass of the solvent and (ii) concentration mass by mass% of the solution. A) (i) Mass of the Solvent = 250g (ii) Mass by Mass% = 33.33%. B) (i) Mass of the Solvent = 150g (ii) Mass by Mass% = 25%. C) (i) Mass of the Solvent = 250g (ii) Mass by Mass% = 25%. D) (i) Mass of the Solvent = 150g (ii) Mass by Mass% = 33.33%. Show Answer Correct Answer: A) (i) Mass of the Solvent = 250g (ii) Mass by Mass% = 33.33%. 6. Different methods of separation is used to separate ..... A) Heterogeneous Mixtures. B) Solutions. C) Homogeneous Mixtures. D) Mixtures. Show Answer Correct Answer: D) Mixtures. 7. If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of A) Evaporation. B) Condensation. C) Sublimation. D) Precipitation. Show Answer Correct Answer: C) Sublimation. 8. A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility A) Lowering the temperature of the solvent. B) Increasing the particle size of the solute. C) Stirring the solute in the solution. D) Increasing the pressure on the solution. Show Answer Correct Answer: C) Stirring the solute in the solution. 9. Which of the following materials fall in the category of a "pure substance" ? Ice, Milk, Iron, Hydrochloric Acid, Mercury, Brick, Wood, Air A) Ice, Milk, Iron, Brick. B) Ice, Milk, Wood, Air. C) Ice, Iron, Hydrochloric Acid, Mercury,. D) Mercury, Brick, Wood, Air. Show Answer Correct Answer: C) Ice, Iron, Hydrochloric Acid, Mercury,. 10. In tincture of iodine, find the solute and solvent? A) Alcohol is the solute and iodine is the solvent. B) Iodine is the solute and alcohol is the solvent. C) Any component can be considered as solute or solvent. D) Tincture of iodine is not a solution. Show Answer Correct Answer: B) Iodine is the solute and alcohol is the solvent. 11. Which of the following is an Aerosol?(two or more options might be correct) A) Foam. B) Shaving Cream. C) Fog. D) Rubber. Show Answer Correct Answer: C) Fog. 12. 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. 13. How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride? A) Precipitation. B) Chromatography. C) Cetrifugation. D) Sublimation. Show Answer Correct Answer: D) Sublimation. 14. Choose a metal which is soft. A) Copper. B) Gold. C) Sodium. D) Graphite. Show Answer Correct Answer: C) Sodium. 15. What does 'pure' mean in Chemistry? A) Composed of multiple elements. B) Composed of a single element. C) Composed of a single compound. D) Composed of multiple compounds. Show Answer Correct Answer: B) Composed of a single element. 16. How much lime is obtained by heating 400 g of limestone? A) 320 g. B) 220 g. C) 224 g. D) 400 g. Show Answer Correct Answer: C) 224 g. 17. 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. 18. What type of mixture is soil? A) Heterogeneous. B) Elementary. C) Homogeneous. D) Compound. Show Answer Correct Answer: A) Heterogeneous. 19. Brass is an alloy of molten Copper in ..... A) Molten Tin. B) Solid Zinc. C) Gaseous Zinc. D) Molten Zinc. Show Answer Correct Answer: D) Molten Zinc. 20. What is the volume of solution in which mass of solute = 50g and mass by volume percentage of the solution = 50% A) 10ml. B) 1000ml. C) 200ml. D) 100ml. Show Answer Correct Answer: D) 100ml. 21. Who was the first scientist to use the term element? A) Robert Boyle. B) Robert Broyle. C) Antoine Lavoisier. D) Robert Brown. Show Answer Correct Answer: A) Robert Boyle. 22. What is found when two elements react with each other? A) Forms a compound. B) Forms a mixture. C) Forms an another element. D) Nothing happens. Show Answer Correct Answer: A) Forms a compound. 23. A mixture that is uniform and well mixed is ..... A) Hetergeneous. B) Homogeneous. C) Pure substance. D) Compoud. Show Answer Correct Answer: B) Homogeneous. 24. Which of the following is a pure substance? A) Brass. B) Steel. C) Distilled water. D) Air. Show Answer Correct Answer: C) Distilled water. 25. 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. 26. 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. 27. 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. 28. 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. 29. A mixture of water in alcohol is an example of ..... A) Suspension. B) Heterogeneous mixture. C) Colloid. D) Homogeneous mixture. Show Answer Correct Answer: D) Homogeneous mixture. 30. Which technique is used in diagnostic lab to test the urine and blood? A) Magnetic Separation. B) Sublimation. C) Evaporation. D) Centrifugation. Show Answer Correct Answer: D) Centrifugation. 31. 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. 32. How many H atoms are in water? A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: B) 2. 33. We can separate kerosene and water using A) A centrifuge. B) A separating funnel. C) Evaporation method. D) Filtration method. Show Answer Correct Answer: B) A separating funnel. 34. 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). 35. In foam the dispersed phase(also called the solute of colloidal solution) is A) Liquid. B) Plasma. C) Solid. D) Gas. Show Answer Correct Answer: D) Gas. 36. A combination that can be separated by physical processes is a ..... A) Element. B) Pure Substance. C) Mixture. D) Glucose. Show Answer Correct Answer: C) Mixture. 37. Which of the following is a sublimating substance? A) NaCl. B) NH$_{4}$Cl. C) MgCl$_{2}$. D) None of the above. Show Answer Correct Answer: B) NH$_{4}$Cl. 38. What is a heterogeneous mixture? A) A mixture in which the substances are not evenly distributed. B) A mixture in which the substances are evenly distributed. C) A mixture that consists of two or more substances. D) A mixture that consists of a single substance. Show Answer Correct Answer: A) A mixture in which the substances are not evenly distributed. 39. Brass is a mixture of ..... and ..... A) Zinc & Magnesium. B) Zinc & Carbon. C) Zinc & Copper. D) None of the above. Show Answer Correct Answer: C) Zinc & Copper. 40. What is the size of particle in a colloid? A) 1nm-100nm. B) 10nm-100nm. C) 1nm-1000nm. D) 10nm-1000nm. Show Answer Correct Answer: A) 1nm-100nm. 41. The amount of solute present per unit volume or per unit mass of the solution/solvent is known as A) Concentration of a solvent. B) Concentration of a solution. C) Composition of solute. D) Concentration of a solute. Show Answer Correct Answer: B) Concentration of a solution. 42. Name the property through which metals shine. A) Platinum. B) Diamond. C) Malleability. D) Lustre. Show Answer Correct Answer: D) Lustre. 43. A mixture of chloroform and water taken in a separating funnel is mixed and left undisturbed for sometime. The upper layer in the separating funnel will be of ..... and the lower layer will be that of ..... A) Water, chloroform. B) Chloroform, water. C) All the above. D) None of the above. Show Answer Correct Answer: A) Water, chloroform. 44. ..... was the first scientist to coin the term element in ..... A) Antoine Lavoisier, 1661. B) Robert Boyle, 1683. C) Antoine Robert Lavoisier, 1743. D) Robert Boyle, 1661. Show Answer Correct Answer: D) Robert Boyle, 1661. 45. What is meant by chromatography? A) The process of separation of volatile and non volatile mixtures is called chromatography. B) The process of separation of components of a mixture based on its solubility is called chromatography. C) The process of separation based on its solubility is called chromatography. D) None of the above. Show Answer Correct Answer: B) The process of separation of components of a mixture based on its solubility is called chromatography. 46. Who was the first person to give the experimentally useful definition of an element? A) Antoine Laurent Lavoisier. B) Robert Boyle. C) All the above. D) None of the above. Show Answer Correct Answer: A) Antoine Laurent Lavoisier. 47. The component of the solution that dissolves the other component in it (usually the component present in larger amount) is called the ..... A) SOLUTE. B) SOLVENT. C) All the above. D) None of the above. Show Answer Correct Answer: B) SOLVENT. 48. How will you seperate sulphur and iron fillings A) Handpicking. B) Sieving. C) Crystallization. D) Magnetic seperation. Show Answer Correct Answer: D) Magnetic seperation. 49. In a sugar solution water is ..... and sugar is ..... A) Water is solute and sugar is solvent. B) Water solute and as well as solvent. C) Water is solvent and sugar is solute. D) None of the above. Show Answer Correct Answer: C) Water is solvent and sugar is solute. 50. Which of the following statement is not true about true solution? A) It can pass through filter paper. B) It is a homogeneous mixture. C) From a true solution, the solute can easily be recovered by evaporation. D) On constant temperature, the particles settle down. Show Answer Correct Answer: D) On constant temperature, the particles settle down. 51. What is the name of the metal which exists in liquid state at room temperature? A) Potassium. B) Mercury. C) Bromine. D) Sodium. Show Answer Correct Answer: B) Mercury. 52. Two substances, A and B were made to react to form a third substance, A2B according to the following reaction2 A + B $\rightarrow$ A) (i), (ii) and (iii),. B) (ii), (iii) and (iv). C) (i), (iii) and (iv). D) (ii) and (iv) and (iv) and (iv). Show Answer Correct Answer: C) (i), (iii) and (iv). 53. Which of the following is not an emulsion? A) Butter. B) Shaving cream. C) Milk. D) Face cream. Show Answer Correct Answer: B) Shaving cream. 54. Name the process by which two immiscible liquids can be separated A) Separating Funnel. B) Separating Pipe. C) Separating tube. D) None of the above. Show Answer Correct Answer: A) Separating Funnel. 55. Chemicals that can be used to kill bacteria in water purification work A) Chlorine. B) Ozone. C) Sulfuric acid. D) Chlorine and Ozone. Show Answer Correct Answer: D) Chlorine and Ozone. 56. What will you use to solve:[Find the concentration of a solution with 40g of salt in 320g of water] A) Volume/Volume%. B) Mass/Volume%. C) Mass/Mass%. D) Volume/Mass%. Show Answer Correct Answer: C) Mass/Mass%. 57. Depending upon the nature of the components that form a mixture, we have the following types A) Coloured mixture & Colourless mixture. B) Homogeneous mixture & Heterogeneous mixture. C) Clear mixture & Unclear mixture. D) None of the above. Show Answer Correct Answer: B) Homogeneous mixture & Heterogeneous mixture. 58. The clear liquid which is left behind in the beaker after settling down of sediments is called: A) Filtrate. B) Solution. C) Supernatant. D) Solvent. Show Answer Correct Answer: C) Supernatant. 59. I AM A HETEROGENEOUS MIXTUREI HAVE NO CONNECTIONS WITH ANY IPL FIXTUREI AM BIG AND YOU CAN SEE ME WITHOUT TOOLSI AM STABLE TO UNSTABLE OVER TIME BUT NOT TO MAKE YOU FOOLS A) SUSPENSION. B) COLLOID. C) SOL. D) SOLUTION. Show Answer Correct Answer: A) SUSPENSION. 60. IN A SOLUTION THERE IS HOMOGENEITY AT THE ..... LEVEL. A) MARKET. B) PURITY. C) ATOM. D) PARTICLE. Show Answer Correct Answer: D) PARTICLE. ← 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 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 7 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books