(i) What is the primary purpose of sieving?
(a) To separate insoluble solids from liquids.
(b) To separate solid substances that differ in size.
(c) To separate immiscible liquids.
(d) To dissolve solid particles in a liquid.
(ii) What is the outer covering of seed grains that can be separated using winnowing?
(a) Salt
(b) Chaff
(c) Sugar
(d) Sand
(iii) What is the process of gradually pouring off liquid from one container to another without disturbing the sediment called?
(a) Loading
(b) Decantation
(c) Sedimentation
(d) Filtration
(iv) What is a saturated solution?
(a) A solution with very little solute.
(b) A solution that cannot dissolve more solute at a given temperature.
(c) A solution with equal amounts of solute and solvent.
(d) A solution with the highest solubility.
(v) How does temperature affect the solubility of a solute in a solvent?
(a) It decreases solubility.
(b) It has no effect on solubility.
(c) It increases solubility.
(d) It changes the color of the solution.
(i) Separation of different-sized solid particles is achieved through a process called _______________.
(ii) Immiscible liquids can be separated using the method of _______________.
(iii) Sedimentation allows the separation of undissolved solid particles from a liquid, where the solid particles settle at the _______________ of the container.
(iv) The process of separating salt from seawater is known as _______________.
(v) Loading is used to separate tiny, suspended solid particles in a liquid by adding a substance like _______________.
Match the processes on the left with their descriptions on the right.
(i) Sedimentation allows the separation of dissolved solid particles from a liquid.
(ii) Loading is used to separate tiny, suspended solid particles in a liquid.
(iii) Immiscible liquids are liquids that mix together to form a single layer.
(iv) Solubility increases with a decrease in temperature.
(v) Decantation is used to separate solid particles based on their size.
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1. What is the process of separation of substances? |
2. Why is it important to separate substances? |
3. What are some common methods used for separating mixtures? |
4. Can you give an example of separation of substances in daily life? |
5. What is the difference between a mixture and a compound? |
22 videos|80 docs|16 tests
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