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Selina solutions for Class 6 Selina Concise Chemistry chapter 5 - Pure Substances and Mixtures; Separation of Mixtures [Latest edition]

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Class 6 Selina Concise Chemistry - Shaalaa.com

Chapter 5: Pure Substances and Mixtures; Separation of Mixtures

Exercise 1Exercise 2Objective Type QuestionsMultiple Choice QuestionsAdditional Questions For Practice
Exercise 1 [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 5 Pure Substances and Mixtures; Separation of Mixtures Exercise 1 [Page undefined]

Exercise 1 | Q 1

Select homogeneous and heterogeneous mixtures from the following:

The salt solution, petrol, and water, sand, and charcoal, alcohol and water, air dissolved in water, air, seawater, fruit juices, mist, brass.

Exercise 1 | Q 2.1

Define the following:

Pure substance

Exercise 1 | Q 2.2

Define the following:

Impure substance

Exercise 1 | Q 2.3

Define the following:

Alloy

Exercise 1 | Q 2.4

Define the following:

Solution

Exercise 1 | Q 2.5

Define the following:

Heterogeneous mixture

Exercise 1 | Q 2.6

Define the following:

Homogeneous mixture

Exercise 1 | Q 3

List four characteristics of a mixture.

Exercise 1 | Q 4.1

Give reason:

Why do sugar and water retain their individual properties in a sugar solution?

Exercise 1 | Q 4.2

Give reason:

Why do petrol and water form a heterogeneous mixture?

Exercise 1 | Q 4.3

Give reason:

Why sulphur does dissolve when carbon disulphide is added to a mixture of iron and sulphur but not when it is added to iron sulphide?

Exercise 1 | Q 5.1

Give two examples of the following type of mixture.

solid-solid

Exercise 1 | Q 5.2

Give two examples of the following type of mixture.

solid-liquid

Exercise 1 | Q 5.3

Give two examples of the following type of mixture.

liquid-gas

Exercise 1 | Q 5.4

Give two examples of the following type of mixture.

gas-gas

Exercise 1 | Q 6.1

Name the components present in the following mixture:

Brass

Exercise 1 | Q 6.2

Name the components present in the following mixture:

Duralumin

Exercise 1 | Q 6.3

Name the components present in the following mixture:

Tap water

Exercise 1 | Q 6.4

Name the components present in the following mixture:

Bronze

Exercise 1 | Q 6.5

Name the components present in the following mixture:

Crude petroleum oil

Exercise 1 | Q 7.1

State three differences between water and air.

Exercise 1 | Q 7.2

State four differences between compounds and mixtures.

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Exercise 2 [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 5 Pure Substances and Mixtures; Separation of Mixtures Exercise 2 [Page undefined]

Exercise 2 | Q 1.1

Define Filtration

Exercise 2 | Q 1.2

Define Sublimation

Exercise 2 | Q 1.3

Define Evaporation

Exercise 2 | Q 1.4

Define Crystallisation

Exercise 2 | Q 1.5

Define Miscible liquids

Exercise 2 | Q 1.6

Define Immiscible liquids

Exercise 2 | Q 2

Why do we need pure substances?

Exercise 2 | Q 3.1

Give one example of the following type of mixture.

Solid-solid heterogeneous mixture

Exercise 2 | Q 3.2

Give one example of the following type of mixture.

Solid-liquid heterogenous mixture

Exercise 2 | Q 3.3

Give one example of the following type of mixture.

Solid-liquid homogeneous mixture

Exercise 2 | Q 4.1

Name the process by which the components of the following mixture can be separated.

Powdered glass and sugar

Exercise 2 | Q 4.2

Name the process by which the components of the following mixture can be separated.

Chalk powder and iron filings

Exercise 2 | Q 4.3

Name the process by which the components of the following mixture can be separated.

Chaff and grain

Exercise 2 | Q 4.4

Name the process by which the components of the following mixture can be separated.

Salt and water

Exercise 2 | Q 4.5

Name the process by which the components of the following mixture can be separated.

Wheat and sugar

Exercise 2 | Q 4.6

Name the process by which the components of the following mixture can be separated.

Sand and camphor

Exercise 2 | Q 4.7

Name the process by which the components of the following mixture can be separated.

Sugar and water

Exercise 2 | Q 5.1

Name two substances which can sublime.

Exercise 2 | Q 5.2

Name two substances soluble in water.

Exercise 2 | Q 5.3

Name two substances insoluble in water.

Exercise 2 | Q 5.4

Name four substances that can be used as filters.

Exercise 2 | Q 6.1

Give reasons

Sand and sawdust cannot be separated by handpicking.

Exercise 2 | Q 6.2

Give reasons

Magnet is used to separate a mixture of iron and sulphur.

Exercise 2 | Q 6.3

Give reasons

Alum is used in purification of river water.

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Objective Type Questions [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 5 Pure Substances and Mixtures; Separation of Mixtures Objective Type Questions [Page undefined]

Objective Type Questions | Q 1.01

Fill in the blanks

The substances that make a mixture are called its ______or_________.

Objective Type Questions | Q 1.02

Fill in the blanks

_____or ___________ is a process to separate solids dissolved in liquids.

Objective Type Questions | Q 1.03

Fill in the blanks

Mist is a _________ mixture of droplets of water and air.

Objective Type Questions | Q 1.04

Fill in the blanks

Clay is separated from water by the method of loading and decantation.

Objective Type Questions | Q 1.05

Fill in the blanks

When cereals are washed before cooking, water is separated from the cereals by ___________.

Objective Type Questions | Q 1.06

Fill in the blanks

___________is a process to obtain a very pure form of a solid dissolved in a liquid.

Objective Type Questions | Q 1.07

Fill in the blank

Ammonium chloride can be separated from common salt by the method of sublimation.

Objective Type Questions | Q 1.08

Fill in the blank

The solid particles which remain on the filter paper are called residue and the liquid which passes through it is called ___________.

Objective Type Questions | Q 1.09

Fill in the blank

The process of transferring the clear liquid layer above the solid particles which settle at the bottom of the container is known as ___________.

Objective Type Questions | Q 1.1

Fill in the blank

______ is a method used for the separation of an insoluble solid from a solid-liquid mixture.

Objective Type Questions | Q 2.1

Write “true” or “false” for the following statement

A pure substance consists of only one kind of atom or molecule.

  • True

  • False

Objective Type Questions | Q 2.2

Write “true” or “false” for the following statement

Common salt is separated from its solution in water by decantation.

  • True

  • False

Objective Type Questions | Q 2.3

Write “true” or “false” for the following statement

Winnowing is a process to remove small stones from grains.

  • True

  • False

Objective Type Questions | Q 2.4

Write “true” or “false” for the following statement

Jewellery gold is a homogeneous mixture of metals.

  • True

  • False

Objective Type Questions | Q 2.5

Write “true” or “false” for the following statement

Air can be separated from water by filtration.

  • True

  • False

Objective Type Questions | Q 2.6

Write “true” or “false” for the following statement

Salt and air dissolved in water add taste to water.

  • True

  • False

Objective Type Questions | Q 2.7

Write “true” or “false” for the following statement

Steel is an alloy of iron and aluminum.

  • True

  • False

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Multiple Choice Questions [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 5 Pure Substances and Mixtures; Separation of Mixtures Multiple Choice Questions [Page undefined]

Multiple Choice Questions | Q 1

Tick (√) the correct alternative from the choice given for the following statement:

The process of adding a chemical substance to help the suspended solid particles to deposit as sediment fastly is called

  • loading

  • sedimentation

  • decantation

  • filtration

Multiple Choice Questions | Q 2

Tick (√) the correct alternative from the choice given for the following statement:

Salt is separated from seawater by

  • loading

  • sublimation

  • crystallisation

  • filtration

Multiple Choice Questions | Q 3

Tick (√) the correct alternative from the choice given for the following statement:

A mixture of mustard oil and water forms

  • a compound

  • a homogeneous mixture

  • an alloy

  • a heterogeneous mixture

Multiple Choice Questions | Q 4

Tick (√) the correct alternative from the choice given for the following statement:

A heterogeneous mixture is

  • made up of only one kind of atom

  • made up of only one kind of molecule

  • made up of different kinds of atoms and molecules.

  • that looks uniform

Multiple Choice Questions | Q 5

Tick (√) the correct alternative from the choice given for the following statement:

Example of a homogeneous mixture is

  • distilled water

  • tap water

  • sand and water

  • sawdust and water

Multiple Choice Questions | Q 6

Tick (√) the correct alternative from the choice given for the following statement:

A set of the mixture is

  • gold, common salt, water, alloy

  • alloy, ink, honey, ice cream

  • alloy, mercury, air, seawater

  • milk, duralumin, brass, silver

Multiple Choice Questions | Q 7

Tick (√) the correct alternative from the choice given for the following statement:

A gas dissolved in a liquid can be separated by

  • filtration

  • boiling

  • using magnet

  • by crystallisation

Multiple Choice Questions | Q 8

Tick (√) the correct alternative from the choice given for the following statement:

Copper is not a part of the alloy

  • brass

  • bronze

  • steel

  • duralumin

Multiple Choice Questions | Q 9

Tick (√) the correct alternative from the choice given for the following statement:

Which is not a mixture?

  • sugar solution

  • tap water

  • milk

  • distilled water

Multiple Choice Questions | Q 10.1

Give one word name for the following

The solid which is left on the filter paper after filtration.

Multiple Choice Questions | Q 10.2

Give one word name for the following

The solid particles which separate out from the solution on slow evaporation

Multiple Choice Questions | Q 10.3

Give one word name for the following

The solid particles that settle at the bottom of the beaker in a heterogeneous mixture of a solid and liquid

Multiple Choice Questions | Q 10.4

Give one word name for the following

The clean liquid which is poured out after sedimentation

Multiple Choice Questions | Q 10.5

Give one word name for the following

The technique used to separate the light particles from heavy particles using the flow of wind

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Additional Questions For Practice [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 5 Pure Substances and Mixtures; Separation of Mixtures Additional Questions For Practice [Page undefined]

Additional Questions For Practice | Q 1.1

Explain the term mixtures.

Additional Questions For Practice | Q 1.2

Give an example of mixtures of two elements

Additional Questions For Practice | Q 1.2

Give an example of mixtures of two compounds

Additional Questions For Practice | Q 1.2

Give an example of mixtures of elements and compounds.

Additional Questions For Practice | Q 2

Differentiate between homogeneous and heterogeneous mixtures with suitable examples.

Additional Questions For Practice | Q 3

With reference to the mixture of iron and sulphur, state the main characteristics of the mixture.

Additional Questions For Practice | Q 4.1

Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to the term

Additional Questions For Practice | Q 4.2

Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence

Additional Questions For Practice | Q 4.3

Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties

Additional Questions For Practice | Q 4.4

Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to Separation of compound

Additional Questions For Practice | Q 5.1

State the principle involved in separation of solid-solid mixtures by sieving

Additional Questions For Practice | Q 5.2

State the principle involved in separation of solid-solid mixtures by magnetic separation

Additional Questions For Practice | Q 5.3

State the principle involved in separation of solid-solid mixtures by Sublimation

Additional Questions For Practice | Q 6.1

State the principle involved in separation of solid-liquid mixtures by sedimentation and decantation

Additional Questions For Practice | Q 6.2

State the principle involved in separation of solid-liquid mixtures by filtration

Additional Questions For Practice | Q 6.3

State the principle involved in separation of solid-liquid mixtures by evaporation

Additional Questions For Practice | Q 7

Explain the term ‘sieving’. State the structure of a sieve and explain the separation of different sized particles by sieving.

Additional Questions For Practice | Q 8

State what is meant by ‘magnetic separation of two mixtures’. Explain how iron particles can be separated from sulphur particles.

Additional Questions For Practice | Q 9

Give a reason why sublimable and non-sublimable substances can be separated easily, but two sublimable substance cannot.

Additional Questions For Practice | Q 10

Explain the technique for separating – insoluble solid particles in a solid-liquid mixture.

Additional Questions For Practice | Q 11

Differentiate between the terms sedimentation and decantation with a suitable experimental technique.

Additional Questions For Practice | Q 12

Explain how a solid component is separated in a soluble solid-liquid mixture.

Additional Questions For Practice | Q 13.1

Draw a neat labelled diagram for the separation of the following mixture.

Coarse sand from fine sand

Additional Questions For Practice | Q 13.2

Draw a neat labelled diagram for the separation of the following mixture.

A magnetic particle from a non-magnetic particle

Additional Questions For Practice | Q 13.3

Draw a neat labelled diagram for the separation of the following mixture.

Naphthalene from sodium chloride

Additional Questions For Practice | Q 13.4

Draw a neat labelled diagram for the separation of the following mixture.

Chalk and water using a filter paper

Additional Questions For Practice | Q 13.5

Draw a neat labelled diagram for the separation of the following mixture.

Sand and water without using a filter paper

Additional Questions For Practice | Q 13.6

Draw a neat labelled diagram for the separation of the following mixture.

Common salt from a solution of common salt and water

Additional Questions For Practice | Q 14.1

State the technique involved in separating the following:

Iodine crystals and potassium chloride

Additional Questions For Practice | Q 14.2

State the technique involved in separating the following:

Iron and chalk powder

Additional Questions For Practice | Q 14.3

State the technique involved in separating the following:

Potassium chloride from an aqueous solution of potassium chloride.

Additional Questions For Practice | Q 14.4

State the technique involved in separating the following:

Rice powder from soil particles

Additional Questions For Practice | Q 14.5

State the technique involved in separating the following:

Iron filings from pieces of copper wire

Additional Questions For Practice | Q 14.6

State the technique involved in separating the following:

Large diamonds from very small diamonds

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Objective Type Questions [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 5 Pure Substances and Mixtures; Separation of Mixtures Objective Type Questions [Page undefined]

Objective Type Questions | Q 1

Match the statements in List I with the correct answer in List II.

List I List II
1. Purification of water by adding alum A: Sublimation
2. Seawater leaving behind common salt B: Sieving
3. Separation of camphor and potassium chloride C: Filtration
4. Separation of charcoal from a charcoal-water mixture D: Sedimentation 
5. Separation of bran and wheat flour E: Evaporation
Objective Type Questions | Q 2.1

State whether the following statement is true or false. If false write – the correct statement.

Components in a mixture are present in a definite proportion.

  • True

  • False

Objective Type Questions | Q 2.2

State whether the following statement is true or false. If false write – the correct statement.

Mixture has no definite set of properties.

  • True

  • False

Objective Type Questions | Q 2.3

State whether the following statement is true or false. If false write – the correct statement.

Components in a mixture can be separated by physical and chemical methods.

  • True

  • False

Objective Type Questions | Q 2.4

State whether the following statement is true or false. If false write – the correct statement.

Sodium chloride and water is an example of a mixture of elements and compounds.

  • True

  • False

Objective Type Questions | Q 2.5

State whether the following statement is true or false. If false write – the correct statement.

Heterogeneous mixtures have different composition and properties throughout the mixture.

  • True

  • False

Objective Type Questions | Q 3.1

Name the following

A black non-metallic component of the mixture gunpowder.

Objective Type Questions | Q 3.2

Name the following:

A physical method of separating iron from an iron-sulfur mixture.

Objective Type Questions | Q 3.3

Name the following:

The component of the soluble solid-liquid mixture, which is lost to the atmosphere on heating.

Objective Type Questions | Q 3.4

Name the following:

The component of a naphthalene-sodium chloride mixture, which remains in the evaporating dish when heated together, covered with a funnel.

Objective Type Questions | Q 3.5

Name the following:

A mixture of two immiscible liquids

Objective Type Questions | Q 4.1

Give reasons for the following:

Naphthalene and camphor cannot be separated by sublimation.

Objective Type Questions | Q 4.2

Give reasons for the following:

Sodium chloride cannot be separated out from its aqueous solution by filtration.

Objective Type Questions | Q 4.3

Give reasons for the following:

Two varieties of wheat flour cannot be separated by sieving.

Objective Type Questions | Q 4.4

Give reasons for the following:

Sulphur and charcoal powder cannot be separated by magnetic separation.

Objective Type Questions | Q 4.5

Give reasons for the following:

Both components of a soluble solid-liquid mixture cannot be recovered by evaporation.

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Chapter 5: Pure Substances and Mixtures; Separation of Mixtures

Exercise 1Exercise 2Objective Type QuestionsMultiple Choice QuestionsAdditional Questions For Practice
Class 6 Selina Concise Chemistry - Shaalaa.com

Selina solutions for Class 6 Selina Concise Chemistry chapter 5 - Pure Substances and Mixtures; Separation of Mixtures

Selina solutions for Class 6 Selina Concise Chemistry chapter 5 (Pure Substances and Mixtures; Separation of Mixtures) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Class 6 Selina Concise Chemistry solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 6 Selina Concise Chemistry chapter 5 Pure Substances and Mixtures; Separation of Mixtures are Difference Between Mixtures and Compounds, Separation Techniques of Mixtures into Their Components - Sieving, Separation Techniques of Mixtures into Their Components - Sedimentation, Separation Techniques of Mixtures into Their Components: - Decantation, Separation Techniques of Mixtures into Their Components: - Filtration, Separation Techniques of Mixtures into Their Components - Magnetic Separation, Evaporation Method, Concept of Mixture.

Using Selina Class 6 solutions Pure Substances and Mixtures; Separation of Mixtures exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 6 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 5 Pure Substances and Mixtures; Separation of Mixtures Class 6 extra questions for Class 6 Selina Concise Chemistry and can use Shaalaa.com to keep it handy for your exam preparation

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