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Selina solutions for Class 6 Selina Concise Chemistry chapter 1 - Introduction to Chemistry [Latest edition]

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Class 6 Selina Concise Chemistry - Shaalaa.com

Chapter 1: Introduction to Chemistry

ExerciseObjective Type QuestionsAdditional Questions For Practice
Exercise [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 1 Introduction to Chemistry Exercise [Page undefined]

Exercise | Q 1.1

Give two examples of the following substance.

Food preservatives

Exercise | Q 1.2

Give two examples of the following substance.

Fuel

Exercise | Q 1.3

Give two examples of the following substance.

Fungicides

Exercise | Q 1.4

Give two examples of the following substance.

Medicines

Exercise | Q 1.5

Give two examples of the following substance.

 Building materials

Exercise | Q 1.6

Give two examples of the following substance.

Chemical war weapons 

Exercise | Q 2.01

What is science?

Exercise | Q 2.02

What is chemistry?

Exercise | Q 2.04

How is chemistry helpful in improving the health of human beings?

Exercise | Q 2.05

What is alchemy?

Exercise | Q 2.06

 What kind of experiments did Alchemists do?

Exercise | Q 2.07

 What is ‘Philosopher’s stone’?

Exercise | Q 2.08

What is the main difference between alchemy and chemistry?

Exercise | Q 2.09

Name the chemicals which help in increasing food production.

Exercise | Q 2.1

Name six such products, which we use daily.

Exercise | Q 2.11

How is the knowledge of chemistry important to mankind?

Exercise | Q 3.1

What is the contribution of chemistry in following field?

Industry

Exercise | Q 3.2

What is the contribution of chemistry in following field?

Clothing

Exercise | Q 3.3

What is the contribution of chemistry in following field?

Cosmetics

Exercise | Q 3.4

What is the contribution of chemistry in following field?

 National Defence

Exercise | Q 3.5

What is the contribution of chemistry in following field?

Medicines

Exercise | Q 4

Who is known as the Father of chemistry? Why?

Exercise | Q 5.1

Name the scientists who discovered the following:

Atoms

Exercise | Q 5.2

Name the scientists who discovered the following:

Oxygen

Exercise | Q 5.3

Name the scientists who discovered the following:

Safety lamp

Exercise | Q 5.4

Name the scientists who discovered the following:

Elements

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Objective Type Questions [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 1 Introduction to Chemistry Objective Type Questions [Page undefined]

Objective Type Questions | Q 1.1

Fill in the blank:

_______ deals with the study of matter and the changes it undergoes.

Objective Type Questions | Q 1.2

Fill in the blank:

_______ help to increase the production of food.

Objective Type Questions | Q 1.3

Fill in the blank:

Food items like jams and pickles are protected by using ___________

Objective Type Questions | Q 1.4

Fill in the blank:

L.P.G. is used for ___________

Objective Type Questions | Q 1.5

Fill in the blank:

Inert gases were discovered by  ___________

Objective Type Questions | Q 2

Match the following words in column A with those in column B:

  Column A   Column B
(a) Clothing (i) toothpaste, cosmetics
(b) Green Revolution (ii) nylon, wool
(c) Building Material (iii) agriculture
(d) Commodities of daily (iv) mortar, cement
Objective Type Questions | Q 3.1

Write “True” or “False” against the following statement.

Chemistry plays an important role in the national economy:

  • True

  • False

Objective Type Questions | Q 3.2

Write “True” or “False” against the following statement.

Antibiotics are used as preservatives:

  • True

  • False

Objective Type Questions | Q 3.3

Write “True” or “False” against the following statement.

D.D.T. is an important fertiliser:

  • True

  • False

Objective Type Questions | Q 3.4

Write “True” or “False” against the following statement.

Gunpowder is an  insecticide:

  • True

  • False

Objective Type Questions | Q 3.5

Write “True” or “False” against the following statement.

Enzymes secreted by our body are chemicals:

  • True

  • False

Objective Type Questions | Q 4.1

Choose the correct alternative from the choices given below for the following statement:

Trinitrotoluene is used as

  • a preservative

  • a fertiliser

  • a fuel

  • an explosive

Objective Type Questions | Q 4.2

Choose the correct alternative from the choices given below for the following statement:

Which one of the following is a pesticide?

  • benzoic acid

  • aldrin

  • sugar

  • gunpowder

Objective Type Questions | Q 4.3

Choose the correct alternative from the choices given below for the following statement:

Mortar is used as a

  • plastic material Urea is an

  • a building material

  • an insecticide

  • as medicine

Objective Type Questions | Q 4.4

Choose the correct alternative from the choices given below for the following statement:

Used is an important

  • fuel

  • preservative

  • fertiliser

  • food item

Objective Type Questions | Q 4.5

Choose the correct alternative from the choices given below for the following statement:

 The chemicals prescribed by a doctor in the treatment of infectious diseases are called

  • antigens

  • lotions

  • antibiotics

  • creams

Objective Type Questions | Q 5

Match the following scientists in column A with their discoveries or contributions in column B.

  Column A   Column B
(a) Marie Curie (i) Safety Lamp
(b) John dalton (ii) Helium
(c) William Ramsey (iii) Nobel Prize Winner (two times)
(d) Sir Humphry Davy (iv) Atomic Theory

 

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Additional Questions For Practice [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 1 Introduction to Chemistry Additional Questions For Practice [Page undefined]

Additional Questions For Practice | Q 1

State what is Science and give the basic bifurcation of Science with reasons.

Additional Questions For Practice | Q 2

Give the basic difference between Inorganic Chemistry and Organic Chemistry.

Additional Questions For Practice | Q 3.1

State the functions of the following basic glass apparatus:

Glass test tube

Additional Questions For Practice | Q 3.2

State the functions of the following basic glass apparatus:

Hard glass boiling tube

Additional Questions For Practice | Q 3.3

State the functions of the following basic glass apparatus:

Beaker

Additional Questions For Practice | Q 3.4

State the functions of the following basic glass apparatus:

Round bottom flask

Additional Questions For Practice | Q 3.5

State the functions of the following basic glass apparatus:

Retort

Additional Questions For Practice | Q 4

State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.

Additional Questions For Practice | Q 5.1

State the function of

The wooden handle at the end of the test tube holder.

Additional Questions For Practice | Q 5.2

State the function of

The asbestos fixed at the center of the wire gauze.

Additional Questions For Practice | Q 5.3

State the function of

The clamp mounted on the rod of a retort stand

Additional Questions For Practice | Q 5.4

State the function of

The air regulator in a Bunsen burner.

Additional Questions For Practice | Q 5.5

State the function of

The tap at the base of a burette.

Additional Questions For Practice | Q 6.1

State the method used for collecting the following gas-
Oxygen – a gas slightly soluble in water.

Additional Questions For Practice | Q 6.2

State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air

Additional Questions For Practice | Q 6.3

State the method used for collecting the following gas-
Sulphur dioxide – a gas highly soluble in water and heavier than air

Additional Questions For Practice | Q 7.1

Explain in brief the importance of Chemistry in agriculture.

Additional Questions For Practice | Q 7.2

Explain in brief the importance of Chemistry in the production of various products

Additional Questions For Practice | Q 8

‘Alchemists are older words for Chemists’. Discuss the statement in brief.

Additional Questions For Practice | Q 9

In the medieval ages – the philosopher’s stone was connected with all transformations. Explain.

Additional Questions For Practice | Q 10.1

State the contributions of Dimitri Mendeleev

Additional Questions For Practice | Q 10.2

State the contributions of Antoine Lavoisier

Additional Questions For Practice | Q 10.3

State the contributions of John Dalton – towards the development of Chemistry.

Additional Questions For Practice | Q 11

Differentiate between the terms food preservatives and food processing with appropriate examples.

Additional Questions For Practice | Q 12

Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.

Additional Questions For Practice | Q 13

Differentiate between: natural fibres & synthetic fibres.
State what is – Terylene. State some of its characteristic properties which make it suitable for commercial use

Additional Questions For Practice | Q 14

Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.

Additional Questions For Practice | Q 15

Give a comparative difference between soaps and detergents. Give a reason. why detergents have an advantage over soap.

Additional Questions For Practice | Q 16

State what are – ‘stain removals’. Name three important stain removers & give their prime functions.

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Objective Type Questions [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 1 Introduction to Chemistry Objective Type Questions [Page undefined]

Objective Type Questions | Q 1.01

Select the correct name from the choices given below for the following case.

The branch of Science which deals with the different forms of energy e.g. light and sound.

  • Chemistry

  • Physics

  • Biology

Objective Type Questions | Q 1.02

Select the correct name from the choices given below for the following case.

The branch of Chemistry which includes a study of specific carbon compounds – built up mainly carbon and hydrogen.

  • Inorganic Chemistry

  • Physical Chemistry

  • Organic Chemistry

Objective Type Questions | Q 1.03

Select the correct name from the choices given below for the following case.

The scientist who formulated the Periodic Table.

  • John Dalton

  • Daniel Rutherford

  • Demitri Mendeleev

Objective Type Questions | Q 1.04

Select the correct name from the choices given below for the following case.

Predecessors to the modern Chemist who created the ‘Philosopher's stone’.

  • Botanists

  • Alchemists

  • Physicists

Objective Type Questions | Q 1.05

Select the correct name from the choices given below for the following case.

A synthetic fiber used in clothing.

  • Cotton

  • Jute

  • Terylene

Objective Type Questions | Q 1.06

Select the correct name from the choices given below for the following case.

A Medicine to treat pain, fever & inflammation.

  • Anesthetic

  • Aspirin

  • Antacid

Objective Type Questions | Q 1.07

Select the correct name from the choices given below for the following case.

A water-soluble cleaning agent – not inactivated by hard water.

  • Soap

  • Detergent

  • Cleanser

Objective Type Questions | Q 1.08

Select the correct name from the choices given below for the following case.

A substance which absorbs moisture and keeps the skin dry and free from rashes.

  • Talc

  • Preservative

  • Emulsifier

Objective Type Questions | Q 1.09

Select the correct name from the choices given below for the following case.

A chemical used as a preservative for jams, pickles, etc.

  • Titanium dioxide

  • Rayon

  • Benzoic acid

Objective Type Questions | Q 1.1

Select the correct name from the choices given below for the following case.

A substance which dissolves grease & oil and is preferred as a – drain cleaner.

  • Glycerine

  • Sodium hydroxide

  • Hydrogen peroxide

Objective Type Questions | Q 2

Match the apparatus A to J shown below with their correct names 1 to 10 given below:

1. Delivery Tube
2. Pipette
3. Wire gauze
4. Bee-hive shelf
5. Thistle funnel
6. Flat bottom flask
7. Test tube stand
8. Burette
9. Retort
10. Conical flask

Objective Type Questions | Q 3.01

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

For gas preparations where heating is required.

  • Flat bottom flask

  • Retort

  • Round bottom flask

Objective Type Questions | Q 3.02

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

For holding washed test tubes

  • Test tube holder

  • Test tube stand

  • Retort stand

Objective Type Questions | Q 3.03

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A glass apparatus resistant to chemicals, made of pyrex, and used for heating specific liquids.

  • Beaker

  • Retort

  • Boiling Tube

Objective Type Questions | Q 3.04

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A metallic apparatus which supports the wire gauze.

  • A Tripod stand

  • Retort stand

  • Test tube stand

Objective Type Questions | Q 3.05

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A long glass apparatus closed at one end used for collecting gases.

  • Measuring cylinder

  • Gas jar

  • Beehive shelf

Objective Type Questions | Q 3.06

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A glass apparatus that measures liquid by sucking the liquid at one end up to the marked level and later pouring it out.

  • Burette

  • Measuring cylinder

  • Pipette

Objective Type Questions | Q 3.07

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A long glass tube with a broad inlet at the top, which allows entry of the reactants into the round bottom flask, during laboratory preparations of gases.

  • Thistle funnel

  • Delivery tube

  • Funnel

Objective Type Questions | Q 3.08

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A clay vessel kept in a trough of water during the collection of gas by downward displacement of water.

  • Retort

  • Beehive shelf

  • Burette

Objective Type Questions | Q 3.09

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A modern apparatus with an air regulator, used for heating purposes.

  • Spirit lamp

  • Bunsen burner

  • Electric stove

Objective Type Questions | Q 3.1

Select the correct apparatus from A, B, or C for the following functions of the apparatus given.

A rectangular mesh with asbestos at its centre kept for initiating even distribution of heat to the bottom of the apparatus.

  • Tripod stand

  • Wire gauze

  • Retort stand

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Objective Type Questions [Page undefined]

Selina solutions for Class 6 Selina Concise Chemistry Chapter 1 Introduction to Chemistry Objective Type Questions [Page undefined]

Objective Type Questions | Q 1

Give reasons for the following

Alchemy was considered a pseudoscience.

Objective Type Questions | Q 2

Give reasons for the following

Preservatives are added to food or beverages.

Objective Type Questions | Q 3

Give reasons for the following

Titanium dioxide is an important ingredient in cosmetics.

Objective Type Questions | Q 4

Give reasons for the following

Aspirin is one of the most widely used medications – globally.

Objective Type Questions | Q 5

Give reasons for the following

Ordinary soap is wasted in hard water.

Objective Type Questions | Q 6

Give reasons for the following

A philosopher’s stone is not exactly a stone.

Objective Type Questions | Q 7

Give reasons for the following

Food processing is an important procedure for obtaining marketable food products.

Objective Type Questions | Q 8

Give reasons for the following

Cosmetics may contain preservatives, as one of their ingredients.

Objective Type Questions | Q 9

Give reasons for the following

Polyester is added to natural fiber cotton, to give terylene.

Objective Type Questions | Q 10

Give reasons for the following

All medicines must be taken under proper doctors' supervision and in the correct dose.

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Chapter 1: Introduction to Chemistry

ExerciseObjective Type QuestionsAdditional Questions For Practice
Class 6 Selina Concise Chemistry - Shaalaa.com

Selina solutions for Class 6 Selina Concise Chemistry chapter 1 - Introduction to Chemistry

Selina solutions for Class 6 Selina Concise Chemistry chapter 1 (Introduction to Chemistry) 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 1 Introduction to Chemistry are Concept of Chemistry - Meaning and Importance, Development of Chemistry - Historical Perspective, Concept for Notable Chemists/Scientists and Their Contributions, Concept for Food and Chemistry, Concept of Cosmetics and Chemistry, Concept of Clothing and Chemistry, Concept of Chemicals as Medicines, Concept of Chemicals in Industries.

Using Selina Class 6 solutions Introduction to Chemistry 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 1 Introduction to Chemistry 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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