MCQ Class 9 Science Chapter 2 Is Matter Around Us Pure Advertisement MCQ’s For All Chapters – Science Class 9th 1. What is a pure substance according to scientists?A mixture with no impuritiesA material made up of only one kind of particlesA combination of many elementsAny natural materialQuestion 1 of 202. Which of the following is a mixture?Sodium chlorideWaterMilkIronQuestion 2 of 203. Mixtures that have uniform composition throughout are called—Heterogeneous mixturesSolutionsHomogeneous mixturesColloidsQuestion 3 of 204. Mixtures having non-uniform composition are called—Homogeneous mixturesHeterogeneous mixturesSolutionsCompoundsQuestion 4 of 205. Which one is a homogeneous mixture?Salt and iron filingsOil and waterSugar dissolved in waterSand and saltQuestion 5 of 206. What kind of mixture is soil?CompoundElementHomogeneous mixtureHeterogeneous mixtureQuestion 6 of 207. A solution is a—Heterogeneous mixtureHomogeneous mixtureCompoundElementQuestion 7 of 208. In a solution, the component present in larger amount is called—SoluteSolventSolidColloidQuestion 8 of 209. Which of these is the solute in lemonade?WaterSugar and saltLemon juice onlyIceQuestion 9 of 2010. Air is a—CompoundHeterogeneous mixtureHomogeneous mixture of gasesPure substanceQuestion 10 of 2011. Brass is a mixture of—Copper and tinZinc and copperIron and carbonSilver and goldQuestion 11 of 2012. Which is the solute in tincture of iodine?IodineAlcoholWaterAirQuestion 12 of 2013. Which solution has gas dissolved in liquid?AirSoda waterAlloyMilkQuestion 13 of 2014. In a solution, solute particles—Can be seen by naked eyesSettle down on standingCannot be seen and are evenly distributedScatter lightQuestion 14 of 2015. The size of particles in a solution is—More than 1 mmBetween 1 nm and 1 mmSmaller than 1 nmLarger than 10 nmQuestion 15 of 2016. Which of the following will not show Tyndall effect?MilkStarch solutionCopper sulphate solutionFogQuestion 16 of 2017. What is a saturated solution?Solution with more soluteSolution that cannot dissolve more solute at given temperatureSolution with little soluteSolution cooled rapidlyQuestion 17 of 2018. The amount of solute dissolved in 100 g of solvent at a given temperature is called—ConcentrationSolubilityCompositionDensityQuestion 18 of 2019. A solution with less solute than saturation level is—ConcentratedDiluteUnsaturatedColloidalQuestion 19 of 2020. Which term refers to the amount of solute in a given mass or volume of solution?SolubilityConcentrationDensityDiffusionQuestion 20 of 20 Loading...
Oxygen is not always found in combined form as well as Sodium chloride does not always exist in the mixture pls look into this and correct the errors
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