Tag: dry methods of separation

Questions Related to dry methods of separation

A mixture of powdered salt and sugar can be separated by the process of winnowing.

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

No, we cannot separate powdered salt and sugar by winnowing beacuse they are forming homogeneous solution.


The constituents of a heterogeneous mixture are X, Y and Z. 
If mixture of X and Y taken separately then, X can be separated using magnetic separation from Y. If mixture Y and Z is taken then it can be separated using distillation method.

Which of the following mixture can be X, Y, Z?
chemistry pure substances and mixtures: separation of mixtures dry methods of separation process of separating components of a mixture method of separation

  1. Iron, salt, water.

  2. Sulphur, carbon disulphide, water.

  3. Gun powder, common salt, water.

  4. Iodine, sand, alcohol.

Show answer
Correct Option: A

Which technique can be used to separate iron from mixture of iron and copper?

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. Sublimation

  2. Magnetic separation

  3. Solvent extraction

  4. Sedimentation

Show answer
Correct Option: B
Explanation:

As iron can be attracted by magnets, so magnetic separation method method can be used to separate iron from the mixture.

State a method to separate ammonium chloride from a mixture of ammonium chloride and potassium chloride.

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. Sedimentation

  2. Sublimation

  3. Magnetic separation

  4. Solvent extraction

Show answer
Correct Option: B
Explanation:

Ammonium chloride sublimes on heating therefore it is easy to remove it by sublimation from a mixture of ammonium chloride and potassium chloride.

Which method can be used to separate two solid mixtures one of which dissolves in a particular solvent and other does not?

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. Separating funnel

  2. Sublimation

  3. Magnetic separation

  4. Solvent extraction

Show answer
Correct Option: D
Explanation:

The two solid mixtures, one of which dissolves in a particular solvent and other does not, can be separated by solvent extraction method.

Iron and brass paper clips can be separated from each other by

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. Magnetic separation

  2. Chromatography

  3. Centrifugation

  4. All of above

Show answer
Correct Option: A
Explanation:

Magnetism is a form of separating mixtures which involves using a magnet to attract another magnetic object away from the substance it is in. Iron gets attracted towards magnet and are separated from brass.

A mixture of iron particles and sand can be separated by:

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. Magnetic separation

  2. Centrifugation

  3. Sublimation

  4. Crystallization

Show answer
Correct Option: A
Explanation:

A mixture with iron filings as one of the components can be separated using a magnet to attract the iron particles away from the mixture.

Magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using a:

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. Frictional force

  2. Gravitational force

  3. Both a and b

  4. Magnetic force

Show answer
Correct Option: D
Explanation:

Magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using a magnetic force. This separation technique can be useful in mining iron as it is attracted to a magnet.

The various methods for separation of solid-solid mixture includes:

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. fractional distillation

  2. leaching

  3. magnetic separation

  4. centrifuge

Show answer
Correct Option: B,C
Explanation:

Fractional distillation is used to separate two liquid mixture based on difference in their boiling point.

centifuge is used to  separate solid from liquid,
Leaching and magnetic separation can be used to separate solid- solid mixture.

The separation of solid particles based on size of particles is known as:

chemistry mix and separate dry methods of separation process of separating components of a mixture method of separation

  1. distillation

  2. centrifuge

  3. screening

  4. wet milling

Show answer
Correct Option: C
Explanation:

The separation of solid particles based on size is known as screening.