This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 2 Is Matter Around Us Pure – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A solution contains 50g of sugar and 450ml of water. Calculate the mass by volume % of the solution. A) 11.11 %. B) 20.11%. C) 50%. D) 10%. Show Answer Correct Answer: D) 10%. 2. Air is regarded as a- A) Mixture. B) Element. C) Compound. D) Alloy. Show Answer Correct Answer: A) Mixture. 3. Which of the following apparatus is not required in sublimation? A) Condenser. B) Funnel. C) China Dish. D) Wire gauze. Show Answer Correct Answer: A) Condenser. 4. Which of the following is not a chemical change? A) Formation of curd. B) Ripening of banana. C) Sublimation of napthalene. D) Corrosion of photo frame. Show Answer Correct Answer: C) Sublimation of napthalene. 5. Which of the following element is not a metalloid? A) Boron. B) Silicon. C) Germanium. D) Tantasts. Show Answer Correct Answer: D) Tantasts. 6. What type of solution is required for crystallizaton? A) Unsaturated. B) Super saturated. C) Diluted. D) None of the above. Show Answer Correct Answer: D) None of the above. 7. Tyndall effect means A) Rays scattered by dust particles. B) Rays travelling from one medium to other. C) Rays undergoing Refraction. D) Rays undergoing totally reflected. Show Answer Correct Answer: A) Rays scattered by dust particles. 8. Which of the following is a separation technique for the separation of salt and ammonium chloride crystals? A) Filtration. B) Fractional Distillation. C) Sublimation. D) Centrifugation. Show Answer Correct Answer: C) Sublimation. 9. Q-1 By which Physical process we can Separate (NaCl) Sodium-Chloride from (H$_{2}$O) Water? A) Burning. B) Filtration. C) Evaporation. D) Separating-Funnel. Show Answer Correct Answer: C) Evaporation. 10. Which separation technique will you use to separate a mixture of two immiscible liquids using difference in densities as a deciding factor? A) Filtration. B) Chromatography. C) Separating funnel. D) Fractional distillation. Show Answer Correct Answer: C) Separating funnel. 11. Colloids are A) Heterogeneous mixture. B) Homogeneous mixture. C) All the above. D) None of the above. Show Answer Correct Answer: A) Heterogeneous mixture. 12. Which of the followong will not show Tyndall effect? A) Smoke. B) Foam. C) Jelly. D) Salt. Show Answer Correct Answer: D) Salt. 13. The process of removing impurities from a solution by using filter paper is called as A) Chromatography. B) Filtration. C) Sublimation. D) Solution. Show Answer Correct Answer: B) Filtration. 14. What type of a colloid is smoke? A) Aerosol. B) Gels. C) Sols. D) Foam. Show Answer Correct Answer: A) Aerosol. 15. ..... CONTAINS TINY DROPLETS OF WATER, WHICH ACT AS PARTICLES OF COLLOID. A) EMULSION. B) AEROSOL. C) MIST. D) PUMICE. Show Answer Correct Answer: C) MIST. 16. Which of the following are chemical changes?(i) Decaying of wood(ii) Burning of wood(iii) Sawing of wood(iv) Hammering of a nail into a piece of wood A) (i) and (ii). B) (ii) and (iii). C) (iii) and (iv). D) (i) and (iv). Show Answer Correct Answer: B) (ii) and (iii). 17. Which of the following elements is not a metalloid? A) Boron. B) Silicon. C) Germanium. D) Tantasts. Show Answer Correct Answer: D) Tantasts. 18. WHAT IS THE SIZE OF THE PARTICLES OF A SUSPENSION?/ A) MORE THAN 100nm. B) Less than 1nm. C) Less than 1nm. D) None of the above. Show Answer Correct Answer: A) MORE THAN 100nm. 19. Component present in large amount in solution called ..... A) Solute. B) Solvent. C) Mixture. D) Sugar. Show Answer Correct Answer: B) Solvent. 20. Which of the following are physical changes?(i) Melting of iron metal(ii) Rusting of iron(iii) Bending of an iron rod(iv) Drawing a wire of iron metal A) (i), (ii) and (iii). B) (i), (ii) and (iv). C) (i), (iii) and (iv). D) (ii), (iii) and (iv). Show Answer Correct Answer: A) (i), (ii) and (iii). 21. Purified water is a A) Element. B) Compound. C) Mixture. D) Atom. Show Answer Correct Answer: B) Compound. 22. What are the two components of a Colloid? A) Solvent, Solute. B) Salt, Water. C) Sugar, Water. D) Dispersed Phase, Dispersion Medium. Show Answer Correct Answer: D) Dispersed Phase, Dispersion Medium. 23. Smell of Hydrogen sulfide gas A) Rotten eggs. B) Burning tyre. C) Pleasant. D) Sweet. Show Answer Correct Answer: A) Rotten eggs. 24. A mixture of common salt, sulphur, sand and iron filings is shaken with carbon disulphide and filtered through a filter paper. The filtrate is evaporated to dryness in a china dish. What will be left in the dish after evaporation? A) Sand. B) Sulphur. C) Iron filings. D) Common salt. Show Answer Correct Answer: B) Sulphur. 25. Brass is an alloy. It is a mixture of ..... A) 30% Zinc 70% copper. B) 20% copper 80% nickel. C) 40% iron 80% copper. D) 35% gold 65% zinc. Show Answer Correct Answer: A) 30% Zinc 70% copper. ← 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 10Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books