Chemistry · Science General

Separation Techniques

842 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 biology protectors of biosphere structure of chloroplast plastids photosynthetic pigments

On what basis, paper chromatography separates plant pigments?

  1. The non - polarity of the solvents and pigments

  2. The polarity of the paper

  3. The polarity of the pigments

  4. All of the above

  5. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Paper chromatography is a technique that is used in the laboratories to separate plant pigments. The concept used is that this helps to separate the mixture into its component molecules. The molecules migrate, or move up the paper, at different rates because of differences in solubility, molecular mass, and hydrogen bonding with the paper.

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

_____ 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

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.