Tag: sedimentation, decantation and filtration

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Multiple choice chemistry separation of matter sedimentation, decantation and filtration other methods of separation separation methods

If the constituents of a solid-liquid mixture have different masses, then we can separate them using:

  1. sublimation

  2. centrifugation

  3. winnowing

  4. evaporation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Centrifugation is a technique which involves the application of centrifugal force to separate particles from a solution. The larger the size and the larger the density of the particles, the faster they separate from the mixture. Example- washing machine works on the principle of centrifugation.

Multiple choice chemistry separation of matter sedimentation, decantation and filtration other methods of separation separation methods

Which of the following can be used for Solid-Solid mixture separation?

  1. Mechanical separation

  2. Magnetic separation

  3. Gravity separation

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solid-solid mixtures can be separated using various physical methods depending on the properties of the components, such as mechanical picking, magnetic properties, or density differences (gravity).

Multiple choice chemistry separation of matter sedimentation, decantation and filtration other methods of separation separation methods

Water is said to be permanently hard when it contains:

  1. chloride and sulphates of Mg and Ca

  2. bicarbonate of Na and K

  3. carbonate of Na and K

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Permanent hardness in water is caused by the presence of dissolved chlorides and sulfates of calcium and magnesium, which cannot be removed by boiling.

Multiple choice chemistry separation of matter sedimentation, decantation and filtration other methods of separation separation methods

_____ is a method of separating suspended particles of a substance from liquid.

  1. Chromatography

  2. Centrifugation

  3. Distillation

  4. Magnetic separation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Centrifugation is a method of separating suspended particles of a substance from liquid.

Centripetal force is applied with a centrifuge to sediment heterogeneous mixtures. It is used in industrial and laboratory settings. It is used in the separation of  two immiscible substances.

Multiple choice chemistry separation of matter sedimentation, decantation and filtration other methods of separation separation methods

When an organic compound is present in an aqueous medium and is less soluble in any organic solvent then it is separated by?

  1. Continuous extraction

  2. Distillation

  3. Chromatography

  4. Sublimation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When an organic compound is present in an aqueous medium and is less soluble in any organic solvent then it is seaparated by continuous extraction.

Hence, option A is correct.