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Separation of Substances

Tests knowledge of various methods used to separate different substances including threshing, sedimentation, churning, evaporation, filtration, crystallization, winnowing, and related concepts about solutions.

19 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

The process followed to separate grains form the stalks is called

  1. Winnowing
  2. Threshing
  3. Sieving
  4. Hand picking
Question 2 Multiple Choice (Single Answer)

The rate of sedimentation is increased by adding ____ to the water.

  1. Salt
  2. Sugar
  3. Alum
  4. Soap
Question 3 Multiple Choice (Single Answer)

The process of increasing the rate of sedimentation in a suspension by addingsome chemical is

  1. Filtration
  2. Crystallisation
  3. Loading
  4. Condensation
Question 4 Multiple Choice (Single Answer)

The process of separating the constituents of a liquid by agitating it vigorously

  1. Evaporation
  2. Churning
  3. Filtration
  4. Sedimentation
Question 5 Multiple Choice (Single Answer)

A solution which cannot dissolve more of a given substance at a given temperature is

  1. Solution
  2. Filtrate
  3. Saturated solution
  4. Unsaturated solution
Question 6 Multiple Choice (Single Answer)

The method that is used to obtain pure salt from impure salt

  1. Decantation
  2. Crystallization
  3. Evaporation
  4. Condensation
Question 7 Multiple Choice (Single Answer)

Rain water is a kind of

  1. saline water
  2. distilled water
  3. carbonated water
  4. saturated water
Question 8 Multiple Choice (Single Answer)

The method used to separate a dissolved solid component from its solution

  1. Evaporation
  2. Filtration
  3. sedimentation
  4. Decantation
Question 9 Multiple Choice (Single Answer)

Butter is separated from curd by the process of

  1. Filtration
  2. Heating
  3. Churning
  4. Sieving
Question 10 Multiple Choice (Single Answer)

Separating the insoluble suspended solids of various sizes from a liquid is called

  1. Filtration
  2. Crystallization
  3. Evaporation
  4. Condensation
Question 11 Multiple Choice (Single Answer)

Cotton fibre is separated from cotton seeds by the process of

  1. Churning
  2. Boiling
  3. Colouring
  4. Ginning
Question 12 Multiple Choice (Single Answer)

A pure solid is obtained from its solution by the process of

  1. Condensation
  2. decantation
  3. Sedimentation
  4. Filtration
Question 13 Multiple Choice (Single Answer)

Principle behind winnowing is

  1. Difference in densities of components
  2. Difference in colours of components
  3. Difference in appearance of components
  4. Difference in shapes of components
Question 14 Multiple Choice (Single Answer)

The process due to which steam changes into liquid state on cooling

  1. Decantation
  2. Sedimentation
  3. Filtration
  4. Evaporation
Question 15 Multiple Choice (Single Answer)

Corn is separated from husk by the process of

  1. Sieving
  2. Winnowing
  3. Churning
  4. Handpicking
Question 16 Multiple Choice (Single Answer)

A mixture of sugar and water can be separated by

  1. Filtration
  2. Evaporation
  3. Separating funnel
  4. decantation
Question 17 Multiple Choice (Single Answer)

A saturated solution can dissolve more of a substance on

  1. Cooling
  2. Heating
  3. Condensing
  4. Evaporating
Question 18 Multiple Choice (Single Answer)

To evaporate a liquid into its vapour, heat the liquid below its

  1. Above its melting point
  2. Below its boiling point
  3. Below its melting point
  4. Above its boiling point
Question 19 Multiple Choice (Single Answer)

Paneer is separated from curdled milk

  1. Condensation
  2. Filtration
  3. evaporation
  4. sedimentation
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