Separation of components of a Mixture Class-6th Goyal Brothers Chemistry Solutions Ch-2 Unit-3

Separation of components of a Mixture Class-6th Goyal Brothers Chemistry Solutions Chapter-2 (unit-3). We Provide Step by Step Answers of Objective, True False , Fill in the blanks, Match the following , Study Questions of Chapter- 2, Elements, Compounds and Mixtures, Unit-3 (Separation of components of a Mixture). Visit official Website  CISCE  for detail information about ICSE Board Class-6.

Separation of components of a Mixture Class-6th

Goyal Brothers Chemistry Solutions Chapter-2 unit-3

Board ICSE
Class 6th
Subject Chemistry
Book Name Goyal Brothers
Theme-2 Elements, Compounds and Mixtures
Unit-3 Separation of components of a Mixture
Topic Solution of exercise questions
Session 2023-24

OBJECTIVE TYPE QUESTIONS

Chemistry Solutions Chapter-2 unit-3

A. Fill in the blanks :

  1. Particles of _iron_ from a mixture are separated by a magnet.
  2. Substance like _ammonium chloride_ can be removed from a mixture by the process of sublimation.
  3. Pure water can be obtained from common salt solution, by the process of _distillation_.
  4. Decantation and _filtration_ are the processes followed in removing insoluble impurities from a river water for city water supply system.
  5. All pure substance contain _same_ particles or group of particles.

B. Statement given below are incorrect. write the correct correct statement:

1. Cheese is removed from the curdled milk by the process of decantation.

Correct Statement: Cheese is removed from the curdled milk by the process of filtration.

2. Sulphur is removed from the mixture of iron and sulphur by sieving.

Correct Statement: Sulphur is removed from the mixture of iron and sulphur by magnet.

3. Pure water is obtained from seawater by the combined process of decantation and filtration.

Correct Statement: Pure water is obtained from seawater by the combined process of distillation.

4. The constituents of a mixture are present in a fixed ratio.

Correct Statement: The constituents of a mixture are present in an indefinite ratio.

5. When the milk is centrifuged, the heavier cream settles at the base.

Correct Statement: When the milk is centrifuged, the heavier cream settles at the bottom.

C. Match the statement in Column A with those in Column B:

Column A

Column B

1. A substance obtained by mixing two or more pure substances.

(a) Distillate

2. A clear liquid obtained by the process of filtration.

(b) Mixture

3. Removing insoluble impurities from muddy water by allowing it to settle.

(c) Sublimate

4. A pure liquid obtained from its solution.

(d) Filtrate

5. A solid obtained from its hot vapour on cooling.

(e) Sedimentation

Answer:

Column A

ColumnB

1. A substance obtained by mixing two or more pure substances.

(b) Mixture

2. A clear liquid obtained by the process of filtration.

(d) Filtrate

3. Removing insoluble impurities from muddy water by allowing it to settle.

(e) Sedimentation

4. A pure liquid obtained from its solution.

(a) Distillate

5. A solid obtained from its hot vapour on cooling.

(c) Sublimate

D. Write ‘True’ or ‘False’ for the following statements :

  1. The process of removing soluble salt from a solution is called evaporation. [T]
  2. The pure water can be obtained from sea water by the process of filtration. [F]
  3. Sulphur can be obtained from a mixture of sand and sulphur by the process of distillation. [F]
  4. Clear water can be obtained from muddy water by the process of centrifugation. [F]
  5. The clear liquid obtained by the process of distillation is called distillate. [T]

E. Tick (√) the most appropriate answer.

1. The pure water is obtained from the sea water with the process of :

(a) Filtration

(b) Evaporation

(c) Centrifugation

(d) Distillation

Ans: (d) Distillation

2. Fine particles of sand in river water are removed with the process of :

(a) Sedimentation

(b) Evaporation

(c) Filtration

(d) Crystallization

Ans: (a) Sedimentation

3. During distillation, the pure liquid collected in another vessel is called :

(a) Sublimate

(b) Distillate

(c) filtrate

(d) None of these

Ans: (b) Distillate

4. Dry common salt can be obtained from its salt solution by the process of :

(a) Decantation

(b) Winnowing

(c) Evaporation

(d) Centrifugation

Ans: (c) Evaporation

5. Ammonium chloride can be separated from a mixture of ammonium chloride and common salt by the process of :

(a) Sublimation

(b) Decantation

(c) Filtration

(d) Evaporation

Ans: (a) Sublimation

STUDY QUESTIONS

Question 1. Define or explain the following terms :

(a) Sedimentation: The method of separating insoluble solids from its suspension, y allowing it to stand still, such that insoluble solid settles at the base of vessel.

(b) Sediment: The matter that settles down at the bottom is called sediment.

(c) Supernatant liquid: A supernatant liquid is a clear liquid free of precipitate that forms during the chemical process of precipitation and is located above the solid part during settling.

(d) Decantation: It is the process of separating liquid components of a mixture while the solid component has settled at the bottom as sediments.

Question 2. What do you understand by the following terms :

(a) Centrifugation: Centrifugation is the process that uses centrifugal force for the separation of two liquids in a mixture. In this process, the denser component of the mixture migrates away from the axis and the lighter component migrates towards the axis

(b) Distillation: Distillation is the process of separating the components of a liquid mixture through selective evaporation and condensation. The basis of separation is the difference in the vapor pressures (volatilities) of the respective components

(c) Distillate: It is the vapor in a distillation that is collected and condensed into a liquid. Alternatively, it is the name of the product obtained from the distillation process.

Question 3. Explain the following terms as clearly as possible:

(a) Filtration: filtration, the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles.

(b) Residue or precipitate: A precipitate is the solid formed in a solution during a chemical reaction and residue refers to the material remaining after a distillation or an evaporation.

Question 4. Describe an experiment for separation of pure ammonium chloride from a mixture of common salt and ammonium chloride.

Answer: The mixture should be taken in an inverted funnel covered with a cotton wool plug. Heat the mixture over a low Bunsen flame. After some time, white fumes are seen to rise in a funnel. These fumes are of ammonium chloride.

Question 5. Describe an experiment for the separation of a mixture of sand, saw dust and common salt.

Answer: The mixture of sand, saw dust and common salt can be separated if water is added to the mixture. Stir the mixture well with water and allow it to stand for some time. Sand settles at the bottom of the beaker, saw dust floats on water and common slat dissolves in water. Saw dust can be separated form the top the mixture.

Question 6. Describe how will you separate the constituents of the mixture of iron fillings, ammonium chloride and sand.

Answer: The constituents of the mixture of iron fillings, ammonium chloride and sand can be separated with the help of sublimation. Further, sand and Iron filings can be separated by magnetic separation.

— : end of Separation of components of a Mixture Class-6th Goyal Brothers Chemistry Solutions ch-2 unit-3 :–-

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