MCQ Class 9 Science Exploration Chapter 5 Exploring Mixtures and their Separation Advertisement 1. Fog is Solution Suspension Colloid Pure substanceQuestion 1 of 202. Smoke is Homogeneous Heterogeneous Pure CompoundQuestion 2 of 203. Air with dust is Homogeneous Heterogeneous Pure SolutionQuestion 3 of 204. Distillation can separate Solid-solid mixtures Liquid-solid mixtures Liquid-liquid mixtures AllQuestion 4 of 205. Acetone boils at 100°C 56°C 78°C 60°CQuestion 5 of 206. Water boils at 56°C 78°C 100°C 60°CQuestion 6 of 207. Chromatography uses Density difference Solubility difference Movement difference TemperatureQuestion 7 of 208. Alloy is Heterogeneous mixture Homogeneous mixture Compound ElementQuestion 8 of 209. Brass contains Copper and zinc Iron and carbon Copper and tin Iron and nickelQuestion 9 of 2010. Bronze contains Copper and zinc Copper and tin Iron and carbon Iron and chromiumQuestion 10 of 2011. Stainless steel contains Only iron Iron and chromium Only carbon Only nickelQuestion 11 of 2012. In colloids, dispersed phase is Solvent Medium Solute-like part GasQuestion 12 of 2013. Dispersion medium is Solute Medium holding particles Gas SolidQuestion 13 of 2014. Emulsions are Solid mixtures Gas mixtures Liquid-liquid colloids SolutionsQuestion 14 of 2015. Oil-in-water emulsion example Butter Milk Cream OilQuestion 15 of 2016. Water-in-oil emulsion example Milk Butter Juice TeaQuestion 16 of 2017. Filtration removes Dissolved particles Large particles Gases LiquidsQuestion 17 of 2018. Evaporation leaves behind Solvent Solute Gas LiquidQuestion 18 of 2019. Distillation helps to Destroy substances Recover solvent Mix substances Heat solidsQuestion 19 of 2020. Mixtures are separated based on Only colour Only size Properties like size, density, solubility Only temperatureQuestion 20 of 20 Loading...
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