Class 9 Practice Level 1 – Is Matter Around Us Pure? Leave a Comment / By anushka kumari / July 3, 2024 Class 9 Practice Level 1 – Is Matter Around Us Pure? Total questions: 40 1. What is an element? Topic: Elements and Compounds A mixture of different substances A pure substance that cannot be broken down into simpler substances A substance composed of two or more elements A homogeneous mixture None 2. Which of the following is an example of a compound? Topic: Elements and Compounds Oxygen Gold Water Nitrogen None 3. What is a mixture? Topic: Mixtures A pure substance that be separated A combination of two or more substances that are chemically combined A combination of two or more substances that are not chemically combined A substance with a fixed composition None 4. Which of the following is a homogeneous mixture? Topic: Homogeneous Mixtures Salad Salt water Sand and water Oil and water None 5. Which of the following is a heterogeneous mixture? Topic: Heterogeneous Mixtures Air Vinegar Salt water Salad None 6. What is a solution? Topic: Solutions A heterogeneous mixture A pure substance A homogeneous mixture of two or more substances A compound None 7. In a salt solution, what is the solute? Topic: Solvent and Solute Water Salt Sugar Alcohol None 8. Which of the following is an example of a colloid? Topic: Types of Mixtures Salt water Muddy water Milk Air None 9. Which method is used to separate a solid from a liquid in a heterogeneous mixture? Topic: Separation Techniques Evaporation Filtration Distillation Chromatography None 10. Which separation technique is used to separate a mixture of two immiscible liquids? Topic: Separation Techniques Filtration Decantation Evaporation Chromatography None 11. What is an alloy? Topic: Alloys A pure metal A mixture of two or more metals A compound of metals and non-metals A heterogeneous mixture None 12. Which of the following is an example of a mixture? Topic: Mixtures Pure water Gold Air Hydrogen None 13. Which of the following is a homogeneous mixture? Topic: Homogeneous Mixtures Oil and water Sand and water Vinegar Wood None 14. What type of mixture is a solution? Topic: Solutions Heterogeneous Homogeneous Colloid Suspension None 15. What is a suspension? Topic: Suspensions A solution A homogeneous mixture A mixture where particles settle over time A compound None 16. Which of the following is an example of a colloid? Topic: Colloids Sugar solution Muddy water Blood Oxygen None 17. Which separation technique uses heat to separate a soluble solid from a liquid? Topic: Solutions Filtration Distillation Evaporation Decantation None 18. Which separation technique can separate components of a mixture based on boiling points? Topic: Distillation Filtration Distillation Evaporation Chromatography None 19. Which method is used to separate different pigments from an ink sample? Topic: Chromatography Filtration Distillation Chromatography Evaporation None 20. What can filtration be used to separate? Topic: Filtration Two miscible liquids A soluble solid from a liquid A solid from a liquid Two immiscible liquids None 21. Which of the following is a pure substance? Topic: Pure Substances Salt solution Air Copper Vinegar None 22. Which of the following is not a homogeneous mixture? Topic: Homogeneous Mixtures Brass Salt water Oil and water Air None 23. Which of the following is not a heterogeneous mixture? Topic: Heterogeneous Mixtures Salad Sand and water Sugar solution Granite None 24. Bronze is an alloy of: Topic: Alloys Copper and zinc Copper and tin Iron and carbon Aluminium and copper None 25. Which of the following is a solution? Topic: Solutions Milk Blood Sea water Muddy water None 26. Which of the following is not separated by filtration? Topic: Filtration Sand from water Tea leaves from tea Salt from saltwater Mud from water None 27. Evaporation can be used to separate: Topic: Evaporation Iron filings from sand Salt from saltwater Pebbles from sand Mud from water None 28. Decantation can be used to separate: Topic: Decantation Oil and water Salt from water Sand from water Iron from sulphur None 29. Which of the following is not a pure substance? Topic: Pure Substances Gold Oxygen Water Air None 30. A mixture of alcohol and water is: Topic: Homogeneous Mixtures A colloid A suspension A homogeneous mixture A heterogeneous mixture None 31. Which method is used to separate dyes in black ink? Topic: Separation Techniques Filtration Chromatography Evaporation Distillation None 32. Which of the following is a characteristic of colloids? Topic: Colloids Particles settle on standing Particles are visible to the naked eye Particles scatter light Particles dissolve completely None 33. Which of the following is a characteristic of suspensions? Topic: Suspensions Particles do not settle Particles are visible and settle on standing Particles are smaller than in solutions Particles form a uniform composition None 34. Distillation is used to separate components of a mixture based on: Topic: Distillation Colour Size Boiling points Density None 35. Which of the following increases the solubility of a solid in a liquid? Topic: Solubility Decreasing temperature Increasing temperature Increasing pressure Stirring None 36. What is retained on the filter paper in filtration? Topic: Filtration Solute Solvent Filtrate Residue None 37. What is the term for the substance that dissolves in a solvent? Topic: Solutions Solute Solution Solvent Colloid None 38. Which method separates a mixture by passing it through a medium where components move at different rates? Topic: Separation Techniques Filtration Distillation Chromatography Evaporation None 39. Which of the following is more soluble in hot water than in cold water? Topic: Solubility Oxygen Nacl Sugar Kcl None 40. What is a pure substance? Topic: Pure Substances A mixture of different substances A material with a uniform and definite composition A substance with variable composition A combination of two or more elements None 1 out of 40 Time's up
Sign in with Google
Sign in with Facebook