Free Filtration and Crystallisation MCQs with Answers
2 Filtration and Crystallisation MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Filtration separates an insoluble solid from a liquid using gravity or suction, while crystallisation purifies a soluble solid by forming crystals from a concentrated solution. The work includes selecting filter media, hot and cold filtration, evaporation, cooling, seeding and washing crystals, and explains why crystallisation is preferred over complete evaporation for purification.
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2 questions
1. The process of filtration is used to separate particles _ from liquids.
- A. Radial.
- B. Angular.
- C. Insoluble.
- D. Soluble
Explanation: The insoluble solid particles can be separated from the liquid by filtration. A filter paper is made into a cone & placed in a funnel, the liquid flows through the cone and solid particles remain in the cone.
Correct answer: Insoluble.2. Which is the best drying agent in desiccators?
- A. KOH
- B. Gypsum
- C. CaCl2
- D. Silica sand
Explanation: The anhydrous calcium chloride will absorb any water (including condensation, vapour etc) in its environment. It effectively traps that water by changing its molecular make-up.
Correct answer: CaCl2Filtration and Crystallisation MCQs: common questions
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