This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 2 Is Matter Around Us Pure – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In which of the following constituents are present in the ratio? A) Mixture. B) Solution. C) Compound. D) Colloid. Show Answer Correct Answer: A) Mixture. 2. ..... Elements are available in the nature. A) 63. B) 92. C) 114. D) None of the above. Show Answer Correct Answer: B) 92. 3. A solution contains 60g of NaCl in 340g of water. Calculate the concentration in terms of mass by mass % of the solution. A) 23%. B) 15%. C) 11.76%. D) 20%. Show Answer Correct Answer: B) 15%. 4. Which of the following substance will not dissolve in water? A) Sodium Chloride. B) Sugar. C) Carbon. D) Copper sulphate. Show Answer Correct Answer: C) Carbon. 5. There are two solutions A and B. Solution B contains 40 g of common salt in 210 g of water and solution A contains 80 g in 320 g of water. Which one will have more concentration of salt? A) Solution A. B) Solution B. C) Both will have same concentration. D) None of the above. Show Answer Correct Answer: A) Solution A. 6. When a saturated solution is heated and more solute is dissolved in it, what is such a solution called? A) Supersaturated Solution. B) Colloidal Solution. C) Aqueous Solution. D) Thermo Saturated Solution. Show Answer Correct Answer: A) Supersaturated Solution. 7. Changing the phase, size or shape of something ..... A) Chemical change. B) Physical Change. C) Suspension. D) Colloid. Show Answer Correct Answer: B) Physical Change. 8. A solution that contains a large amount of solute is best described as A) Unsaturated. B) Concentrated. C) Dilute. D) Weak. Show Answer Correct Answer: B) Concentrated. 9. A true solution is a A) Homogeneous mixture. B) Heterogeneous mixture. C) Pure compound. D) Impure compound. Show Answer Correct Answer: A) Homogeneous mixture. 10. What is the boling point of Argon? A) -196. B) -186. C) -17. D) -156. Show Answer Correct Answer: B) -186. 11. What are atoms composed of? A) Protons and electrons. B) Protons, neutrons, and electrons. C) Neutrons and electrons. D) Ions, elements, and compounds. Show Answer Correct Answer: B) Protons, neutrons, and electrons. 12. Which of these is a pair of isobars? A) $_{6}$C $^{12}$, $_{8}$O$^{16}$. B) $_{6}$C $^{13}$, $_{6}$C$^{14}$. C) $ _ {20} $ ca $^{40} $, $ _ {18} $ ar $ {40} $. D) $_{17}$Cl$^{35}$, $_{17}$Cl$^{37}$. Show Answer Correct Answer: C) $ _ {20} $ ca $^{40} $, $ _ {18} $ ar $ {40} $. 13. WHICH ONE IS A MIXTURE? A) BLOOD. B) CARBON DIOXIDE. C) SILICON. D) SODIUM. E) TIN. Show Answer Correct Answer: A) BLOOD. 14. How does loading tank help in purification of water? A) Allows to sediment the suspended impurities. B) Allows solids to settle. C) Allows Light solids to settle. D) None of the above. Show Answer Correct Answer: A) Allows to sediment the suspended impurities. 15. Elements are classified into three types. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. Sugar syrup, usually used to coat sweets with sugar, becomes hard when cooled. From this we can conclude that sugar syrup is A) A supersaturated solution. B) An unsaturated solution. C) Not a solution. D) None of the given options. Show Answer Correct Answer: A) A supersaturated solution. 17. Camphor is a sublimable substance. A) True. B) Fals. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Amorphous solids: A) Are more flexible at higher temperature. B) Include glasses. C) Do not have specific melting point. D) All of these. Show Answer Correct Answer: D) All of these. 19. Which of the following substance differs (isolates)? A) Brass. B) Air. C) Sand. D) Graphite. Show Answer Correct Answer: D) Graphite. 20. What is ink composed of? A) Dyestuff + Water. B) Color + Water. C) Dye + Water. D) Colorant + Water. Show Answer Correct Answer: C) Dye + Water. 21. How many elements are naturally occurring? A) 100. B) 102. C) 92. D) 93. Show Answer Correct Answer: C) 92. 22. Which one of the following is a pure substance? A) Sodium chloride. B) Soft drink. C) Aerosol. D) Soil. Show Answer Correct Answer: A) Sodium chloride. 23. Cooking of food and digestion of food A) Are both physical processes. B) Are both chemical processes. C) Cooking is physical whereas digestion is chemical. D) Cooking is a chemical whereas digetion is physical. Show Answer Correct Answer: B) Are both chemical processes. 24. Which of the following property does not describe a compound? A) It is composed of two or more elements. B) It is a pure substance. C) It cannot be separated into constituents by physical means. D) It is mixed in any proportion by mass. Show Answer Correct Answer: D) It is mixed in any proportion by mass. 25. Motion of particles in a colloidal solution is called A) Rectilinear motion. B) Brownian motion. C) Circular motion. D) Oscillatory motion. Show Answer Correct Answer: B) Brownian motion. ← 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