This quiz works best with JavaScript enabled. Home > Class 6 > Class 6 Science Chapter 5 Separation Of Substances – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 5 Separation Of Substances Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. IF THE SUBSTANCE HAS FIXED MELTING AND BOILING POINTS, WE CAN SAY A) THE SUBSTANCE IS HETEROGENOUS MIXURE. B) THE SUBSTANCE IS HOMOGENOUS MIXTURE. C) THE SUBSTANCE IS PURE ELEMENT OR COMPOUND. D) ALL OF THE ABOVE. Show Answer Correct Answer: C) THE SUBSTANCE IS PURE ELEMENT OR COMPOUND. 2. What is the process of allowing the solid to settle and then carefully pouring off the liquid? A) Filtration. B) Sedimentation and Decantation. C) Centrifugation. D) Crystallization. Show Answer Correct Answer: B) Sedimentation and Decantation. 3. What is Supernatant? A) The clear liquid that remains above the sediments are called Supernatant. B) Sedimentation, Decantantion. C) The clear liquid that remains above the sediments are called Dinosaur. D) The frozen liquid that remains below the decantation are called Supernatant. Show Answer Correct Answer: A) The clear liquid that remains above the sediments are called Supernatant. 4. The process sedimentation can be used to separate ..... - ..... components. A) Liquid-Liquid. B) Solid-Liquid. C) Solid-Solid. D) Gaseous-Semi solid. Show Answer Correct Answer: B) Solid-Liquid. 5. By which method can we seeds from juice A) Filtration. B) Sieving. C) Evaporation. D) Sedimentation. Show Answer Correct Answer: A) Filtration. 6. What is winnowing A) The process of beating the harvested crops to separate grains from the Stalks. B) The process of separating The Light a particle from the one with the help of the Wind. C) The method of separating particles of different sizes. D) None of the above. Show Answer Correct Answer: B) The process of separating The Light a particle from the one with the help of the Wind. 7. Oil mixed in water is the process of decantation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. WHICH OF THE FOLLOWING CAN DISSOLVE IN WATER A) ONLY SOLIDS. B) ONLY LIQUIDS. C) ONLY SOLIDS AND LIQUIDS. D) SOLIDS, LIQUIDS AND GASES. Show Answer Correct Answer: D) SOLIDS, LIQUIDS AND GASES. 9. In crystallisation a ..... is important as the crystals of salt/suar can be seen on it clearly A) Rubber cloth. B) Iron rod. C) Glass rod. D) China dish. Show Answer Correct Answer: C) Glass rod. 10. Which process is used in separating tea particles from tea? A) Sedimentation. B) Decantation. C) Filtration. D) Winnowing. Show Answer Correct Answer: C) Filtration. 11. Threshing is done by: A) Beating. B) Bullocks. C) Machine. D) All of these. Show Answer Correct Answer: D) All of these. 12. Pearl was confused in differentiating between pure and impure substances. Can you tell which one is a pure Substances. Gold, Ice Cream, Milk shake and Blueberry chocolate. A) Ice Cream. B) Milk Shake. C) Blueberry Chocolate. D) Gold. Show Answer Correct Answer: D) Gold. 13. The technique of conveying clean liquid without disturbing the sediment is known as? A) Decantation. B) Sedimentation. C) Condensation. D) Sublimation. Show Answer Correct Answer: A) Decantation. 14. The method used to separate mixture of iron filling and salt wil be- A) Filtration. B) Winnowing. C) Sieving. D) Magnetic separaton. Show Answer Correct Answer: D) Magnetic separaton. 15. When no more salt dissolves in water at a particular temperature, then the solution at that temperature is called A) Unsaturated. B) Saturated. C) Supersaturated. D) None of these. Show Answer Correct Answer: B) Saturated. 16. You are given a small beaker of solution at room temp. You add a bit of solute to the solution and it dissolves. The solution was: A) Saturated. B) Unsaturated. C) Concentrated. D) Warm. Show Answer Correct Answer: B) Unsaturated. 17. Machines are also used to thresh large quantities of grain. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Sieving is used when component of a mixture have ..... A) Same sizes. B) All sizes. C) Different sizes. D) Heavier and lighter substances. Show Answer Correct Answer: C) Different sizes. 19. Separating pieces of stone and husk from rice and pulses A) Winnowing. B) Threshing. C) Hand-picking. D) Sieving. Show Answer Correct Answer: C) Hand-picking. 20. If the components of a mixture are of different sizes, they can be seperated by Sieving. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. MIXTURES ARE MADE UP OF A) TWO OR MORE ELEMENTS. B) TWO OR MORE ELEMENTS AND COMPOUNDS. C) TWO OR MORE COMPOUNDS. D) ANY OF THE ABOVE. Show Answer Correct Answer: D) ANY OF THE ABOVE. 22. While preparing chapatti, paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour? A) Threshing. B) Sieving. C) Winnowing. D) Filtration. Show Answer Correct Answer: B) Sieving. 23. What happens in an evaporation dish? A) Water stays with the mixture. B) Water becomes a solid. C) Water turns into water vapor and is no longer in the dish. D) More water appears. Show Answer Correct Answer: C) Water turns into water vapor and is no longer in the dish. 24. The process followed to separate grains from the stalks is called ..... A) Winnowing. B) Threshing. C) Sieving. D) Hand picking. Show Answer Correct Answer: A) Winnowing. 25. Solubility is the ability of a substance to get disolved in a given solid. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. ← PreviousNext →Related QuizzesClass 6 Science Chapter 5 Separation Of Substances Quiz 1Class 6 Science Chapter 5 Separation Of Substances Quiz 2Class 6 Science Chapter 5 Separation Of Substances Quiz 3Class 6 Science Chapter 5 Separation Of Substances Quiz 4Class 6 Science Chapter 5 Separation Of Substances Quiz 5Class 6 Science Chapter 5 Separation Of Substances Quiz 6Class 6 Science Chapter 5 Separation Of Substances Quiz 8Class 6 Science Chapter 5 Separation Of Substances Quiz 9Class 6 Science Chapter 5 Separation Of Substances Quiz 10Class 6 Science Chapter 5 Separation Of Substances Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books