Is Matter Around Us Pure (क्या हमारे आस-पास के पदार्थ शुद्ध है) Ch(2) Practice Quiz in Hindi Part – 2 || Class 9 Science Practice Quizzes in English Posted on February 28, 2025February 28, 2025 by Anshul Gupta0% 0 votes, 0 avg 0 Is Matter Around Us Pure (क्या हमारे आस-पास के पदार्थ शुद्ध है) Ch(2)Practice Quiz in Hindi Part – 2 || Class 9 Science Practice Quizzes in English 1 / 201. What is the process of separating two liquids with different boiling points by heating the mixture and condensing the vapor called? A. Centrifugation B. Filtration C. Distillation D. Evaporation Explanation: Distillation is the process of separating two liquids with different boiling points by heating the mixture and condensing the vapor. The liquid with the lower boiling point evaporates first, and its vapor is condensed back into a liquid.2 / 202. What is the process of separating a solid from a liquid by passing the mixture through a filter paper called? A. Distillation B. Centrifugation C. Filtration D. Evaporation Explanation: Filtration is the process of separating a solid from a liquid by passing the mixture through a filter paper. The solid particles are trapped by the filter paper, while the liquid passes through. 3 / 203. Which of the following is a suspension? A. Saltwater B. Air C. Sand and water D. Lemonade Explanation: Sand and water is a suspension because the sand particles are not dissolved in the water and can be separated by filtration.4 / 204. Which of the following is a colloid? A. Sugar and water B. Milk C. Air D. Sand and iron filings Explanation: Milk is a colloid because it contains tiny droplets of fat dispersed throughout the water, and these droplets scatter light, exhibiting the Tyndall effect.5 / 205. What is a homogeneous mixture? A. A mixture with a non-uniform composition B. A compound C. A mixture with a uniform composition throughout D. A pure substance Explanation: A homogeneous mixture has the same composition throughout, meaning the components are evenly distributed. 6 / 206. What is the process of separating two liquids with different boiling points by heating the mixture and condensing the vapor called? A. Filtration B. Distillation C. Centrifugation D. Evaporation Explanation: Distillation is the process of separating two liquids with different boiling points by heating the mixture and condensing the vapor. The liquid with the lower boiling point evaporates first, and its vapor is condensed back into a liquid. 7 / 207. Which of the following is NOT a property of metals? A. Good conductor of heat and electricity B. Ductile C. Malleable D. Brittle Explanation: Metals are typically malleable and ductile, meaning they can be hammered into thin sheets and drawn into wires, respectively. 8 / 208. Which of the following is NOT a property of non-metals? A. Poor conductor of heat and electricity B. Malleable C. Not lustrous D. Brittle Explanation: Non-metals are typically brittle, meaning they break easily when hammered. 9 / 209. Which of the following is a solution? A. Sand and water B. Milk C. Smoke D. Saltwater Explanation: Saltwater is a solution because the salt is completely dissolved in the water, forming a homogeneous mixture.10 / 2010. Which of the following is NOT a solution? A. Lemonade B. Sand and water C. Saltwater D. Air Explanation: Sand and water is a suspension, not a solution. The sand particles are not dissolved in the water and can be separated by filtration. 11 / 2011. What is a heterogeneous mixture? A. A mixture with a uniform composition throughout B. A mixture with a non-uniform composition C. A compound D. A pure substance Explanation: A heterogeneous mixture has a non-uniform composition, meaning the components are not evenly distributed. 12 / 2012. What is the process of separating a dissolved solid from a liquid by heating the liquid to evaporate it called? A. Filtration B. Distillation C. Evaporation D. Centrifugation Explanation: Evaporation is the process of separating a dissolved solid from a liquid by heating the liquid to evaporate it. The solid is left behind as the liquid evaporates.13 / 2013. What is the process of separating a mixture of two solids with different densities by spinning the mixture at high speed called? A. Distillation B. Filtration C. Evaporation D. Centrifugation Explanation: Centrifugation is the process of separating a mixture of two solids with different densities by spinning the mixture at high speed. The denser solid settles at the bottom, while the less dense solid floats on top.14 / 2014. What is the chemical formulafor water? A. NaCl B. CO2 C. H2SO4 D. H2O Explanation: The chemical formula for water is H2O, indicating that it is composed of two hydrogen atoms and one oxygen atom.15 / 2015. What is the process of separating a solid from a liquid by passing the mixture through a filter paper called? A. Evaporation B. Filtration C. Distillation D. Centrifugation Explanation: Filtration is the process of separating a solid from a liquid by passing the mixture through a filter paper. The solid particles are trapped by the filter paper, while the liquid passes through.16 / 2016. What is the process of separating a mixture of two solids with different densities by spinning the mixture at high speed called? A. Filtration B. Evaporation C. Distillation D. Centrifugation Explanation: Centrifugation is the process of separating a mixture of two solids with different densities by spinning the mixture at high speed. The denser solid settles at the bottom, while the less dense solid floats on top. 17 / 2017. Which of the following is NOT a method of separating mixtures? A. Distillation B. Evaporation C. Filtration D. Combustion Explanation: Combustion is a chemical process, not a method of separating mixtures.18 / 2018. What is the process of separating a dissolved solid from a liquid by heating the liquid to evaporate it called? A. Distillation B. Filtration C. Centrifugation D. Evaporation Explanation: Evaporation is the process of separating a dissolved solid from a liquid by heating the liquid to evaporate it. The solid is left behind as the liquid evaporates. 19 / 2019. Which of the following is NOT a colloid? A. Smoke B. Milk C. Saltwater D. Fog Explanation: Saltwater is a solution, not a colloid. The salt particles are completely dissolved in the water and do not scatter light. 20 / 2020. Which of the following is a mixture? A. Water B. Carbon dioxide C. Air D. Iron Explanation: Air is a mixture of different gases, primarily nitrogen and oxygen, along with trace amounts of other gases.Please insert your information to see your ranking अपनी Ranking जानने के लिए कृपया अपनी जानकारी भरे NamePhone Number Your score isThe average score is 0% 0% Restart quiz Category: Class 9 Science Quizzes in English
