This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 2 Is Matter Around Us Pure – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 13 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A mixture of dye in a volatile liquid can be seperated by? A) Evaporatoion. B) Sedimentation. C) Chromatography. D) Filtration. Show Answer Correct Answer: C) Chromatography. 2. The approximate proportion of zinc in brass is ..... %. A) 20. B) 30. C) 70. D) None of the above. Show Answer Correct Answer: B) 30. 3. Air is regarded as mixture because? A) It's pressure may vary. B) It's temperature may vary. C) Volume changes under different compositions. D) It's compositions may vary. Show Answer Correct Answer: D) It's compositions may vary. 4. Gas to liquid A) Centrifugation. B) Sublimation. C) Filtration. D) Condensation. Show Answer Correct Answer: D) Condensation. 5. How will you separate the components of sugar solution A) Evaporation. B) Crystallization. C) Filtration. D) Chromatography. Show Answer Correct Answer: B) Crystallization. 6. Which of the following will show the "Tyndall effect" ? (a) Salt solution (b) Milk (c) Copper sulphate solution (d) Starch solution A) Copper sulphate solution, Starch solution. B) Salt solution, Milk. C) Salt solution, Copper sulphate solution. D) Milk, Starch solution. Show Answer Correct Answer: D) Milk, Starch solution. 7. Coloured gemstone is an example of A) Gel. B) Solid Sol. C) Emulsion. D) Aerosol. Show Answer Correct Answer: B) Solid Sol. 8. CO2 would be a ..... A) Compound. B) Molecule. C) Compound AND Molecule. D) Element. Show Answer Correct Answer: C) Compound AND Molecule. 9. A solution contains 80 g of common salt in 640 g of water.Calculate the concentration in terms of mass by mass percentage of the solution. A) 22.2 %. B) 11.1 %. C) 11 %. D) 7.7%. Show Answer Correct Answer: B) 11.1 %. 10. Elements and Compounds do not fall under the category of: A) Pure Substances. B) Mixtures. C) All the above. D) None of the above. Show Answer Correct Answer: B) Mixtures. 11. HOW MANY ELEMENTS ARE GASEOUS STATE AT TEMPERATURE BETWEEN 20*C-25*C A) 4. B) 7. C) 11. D) 19. Show Answer Correct Answer: C) 11. 12. By which process can we separate cream from milk? A) Centrifugation. B) Chromatography. C) Promation. D) Filtration. Show Answer Correct Answer: A) Centrifugation. 13. What is the state of the solute and solvent in solution of hydrogen and palladium? A) Solute = Gas, Solvent = Solid. B) Solute = Solid, Solvent = Gas. C) Solute = Gas, Solvent = Liquid. D) Solute = Liquid, Solvent = Gas. Show Answer Correct Answer: A) Solute = Gas, Solvent = Solid. 14. Identify the chemical change A) Burning of coal. B) Melting of ice. C) Tearing paper. D) MIxing salt and sand. Show Answer Correct Answer: A) Burning of coal. 15. When size of a particle in a mixture is less than 1 nanometre, that mixture is an example of ..... A) Solution. B) Colloid. C) Pure substance. D) Suspension. Show Answer Correct Answer: A) Solution. 16. Which of these is a chemical change? A) Tearing of paper. B) Growing of humans. C) Breaking glass. D) Squeezing sponge. Show Answer Correct Answer: B) Growing of humans. 17. Particles of which are visible in naked eyes A) Mixture. B) Colloidal solution. C) Suspension. D) None of these. Show Answer Correct Answer: C) Suspension. 18. A mixture that is NOT evenly distributed is called ..... A) Compounded. B) Homogenous. C) Heterogenous. D) Salty. Show Answer Correct Answer: C) Heterogenous. 19. Q-4 The component of a solution that dissolves the other component is called as ..... ? A) Solution. B) Solute. C) Solvent. D) Not able to answer!!!!!!!!!. Show Answer Correct Answer: C) Solvent. 20. What is the smell of hydrogen sulphide? A) Rotten Vegetables. B) Odourless. C) Rotten eggs. D) None of these. Show Answer Correct Answer: C) Rotten eggs. 21. Which of the following statements tells us that a sample of liquid is pure water? A) It is colourless. B) It leaves no residue when filtered. C) It boils at 100$^{o}$C. D) It is odourless. Show Answer Correct Answer: C) It boils at 100$^{o}$C. 22. Is matter around us really pure? A) For sure yes!. B) Maybe Not. C) Contains Mixtures As well as pure substances but more of them are mixtures. D) I am Not so sure. Show Answer Correct Answer: C) Contains Mixtures As well as pure substances but more of them are mixtures. 23. When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in: A) Centrifugation. B) Fractional distillation. C) Evaporation. D) Tunneling. Show Answer Correct Answer: A) Centrifugation. 24. Shaving foam is which type of colloid solution A) Sol. B) Foam. C) Aerosol. D) None of these. Show Answer Correct Answer: B) Foam. 25. DISPERSED PHASE IS SIMILAR TO A) IPL SECOND PHASE. B) SOLUTE. C) SOLVENT. D) IPL FIRST PHASE. Show Answer Correct Answer: B) SOLUTE. ← 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 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books