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CBSE CLASS 9 - Is matter pure around us -MCQ test

Is matter pure around us
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Kerala PSC

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  • Rusting of an article made up of iron is called - corrosion and it is a chemical change
  • A mixture of sulphur and carbon disulphide is - homogeneous and does not show Tyndall effect
  • Tincture of iodine has antiseptic properties. This solution is made by dissolving - iodine in alcohol
  • Blood and sea water are - both mixtures
  • Sol and gel are examples of - Sol is a solid-liquid colloid and gel is liquid solid colloid
  • In a water-sugar solution - water is solvent and sugar is solute
  • Boron and carbon are - metalloid and non-metal respectively
  • Which of the following methods would you use to separate cream from milk? - Centrifugation
  • Cooking of food and digestion of food: - are both chemical processes
  • Mercury and bromine are both - liquid at room temperature


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