Chemistry · Science General

Separation Techniques

813 Questions

Separation techniques involve physical methods to isolate mixtures, including distillation, filtration, and crystallization. Competitive exams frequently test these foundational concepts. Review the exact processes to enhance problem solving speed.

Distillation and evaporationCrystallization processFiltration methodsSeparating dissolved solidsChromatography and mass techniques

Separation Techniques Questions

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

_____ 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.

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

Copper sulphate dissolved in water can be recovered as solid by:

  1. Evaporation

  2. Filtration

  3. Centrifugation

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

Evaporation is used to separate a soluble solid from a liquid. For example, copper sulfate is soluble in water its crystals dissolve in water to form copper sulfate solution. During evaporation, the water evaporates away leaving solid copper sulfate crystals behind.

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

The process of _________ is used to separate the component from a solid-solid mixture which _________ on heating and the other component being non-volatile.

  1. sublimation, soluble

  2. sublimation, sublimes

  3. chromatography, soluble

  4. centrifugation, sublimes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The process of sublimation is used to separate the component from solid-solid mixture which sublimes on heating and the other component being non-volatile.

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

The salt can be easily obtained from the salty water by the process of

  1. Evaporation

  2. Chromatography

  3. Crystallization

  4. Both a and b
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The process of conversion of water into vapour by heating it to its boiling point is called evaporation.The salt can be easily obtained from the salty water by the process of evaporation. If we boil this water, the water evaporates completely, leaving behind only the salt.