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Viraf J. Dalal solutions for Class 6 New Simplified Middle School Chemistry chapter 5 - Air and Atmosphere [Latest edition]

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Class 6 New Simplified Middle School Chemistry - Shaalaa.com

Chapter 5: Air and Atmosphere

ExerciseObjective Type Questions
Exercise

Viraf J. Dalal solutions for Class 6 New Simplified Middle School Chemistry Chapter 5 Air and Atmosphere Exercise

Exercise | Q 1

State what do you understand by the term ‘air’. Explain its importance to mankind.

Exercise | Q 2

Give a brief account of the discovery of air and the scientists involved.

Exercise | Q 3

What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.

Exercise | Q 4

Explain in brief the different layers of the atmosphere and the basic functions of the main layers.

Exercise | Q 5.1

Describe a simple experiment with the help of a diagram to show that Air occupies space

Exercise | Q 5.2

Describe a simple experiment with the help of a diagram to show that Air has mass

Exercise | Q 5.3

Describe a simple experiment with the help of a diagram to show that Air exerts pressure

Exercise | Q 5.4

Describe a simple experiment with the help of a diagram to show that Air is highly compressible

Exercise | Q 6

Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.

Exercise | Q 7

With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.

Exercise | Q 8

You are given a test tube with two outlets and a bottle of lime water. Using same, how would you demonstrate experimentally the presence of carbon dioxide in air.

Exercise | Q 9

Give a reason why water droplets appear on the outer surface of a tumbler containing ice.

Exercise | Q 10

Explain the importance of nitrogen of the air for plant growth.

Exercise | Q 11

Give a reason why nitrogen is filled in food packets and not oxygen.

Exercise | Q 12

State what would happen, if the air above the earth contained mainly oxygen and no nitrogen

Exercise | Q 13.1

State the utility of oxygen for respiration in living organisms

Exercise | Q 13.2

State the utility of oxygen for respiration in plants

Exercise | Q 14

Compare respiration and combustion-both involving oxygen of the air.

Exercise | Q 15

Explain the importance of carbon dioxide for (a) photosynthesis (b) warming the earth’s environment. State what would happen if excess carbon dioxide as a pollutant is released into the atmosphere.

Exercise | Q 16

State in brief how water vapour in the atmosphere determines the climatic conditions

Exercise | Q 17

Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.

Exercise | Q 18

A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.

Exercise | Q 19

State a reason why there is a balance in the amount of carbon dioxide in the air, even though carbon dioxide is released into the atmopshere by various processes.

Exercise | Q 20

Name three different appliances where air is utilized.

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Objective Type Questions

Viraf J. Dalal solutions for Class 6 New Simplified Middle School Chemistry Chapter 5 Air and Atmosphere Objective Type Questions

Objective Type Questions | Q 1

Match the statements in List 1 with the correct answers in List 2

List 1 List 2
1 An impurity in air A Water vapour
2 The component of air which supports combustion B Respiration
3 The inert component in the air slightly soluble in water C Rare gases
4 The component of air which minimizes the rate of evaporation D Sulphur dioxide
5 The process which involves oxidation of food substance in living organisms E Helium
6 The component of air which finds application in observation balloons F Carbon dioxide
7 The process which involves oxidation of substances, liberating heat and light energy G Combustion
8 The component of air which is heavier than air and fairly soluble in water H Nitrogen
9 The process by which atmospheric carbon dioxide is absorbed by plants resulting in the formation of carbohydrates I Photosynthesis
10 The component of air which is lighter than air and less than 1% in air J Oxygen
Objective Type Questions | Q 2

The diagrams below represents an experiment to show the presence of a component of air.

  1. State why air is sucked from – outlet ‘B’ and not from outlet “A”
  2. State why the air is sucked ‘slowly’ from the outlet “B”
  3. State the observation seen after completion of the experiment.
  4. State the reason for the above observation seen.
  5. Name another component which if present in air as a pollutant would have given a similar observation
Objective Type Questions | Q 3.1

Complete the statement given below by filling in the blank with the correct word from the words given below

The ______ is a layer which extends up to about 10-50 km. above the earth.

  • atmosphere

  • troposphere

  • stratosphere

Objective Type Questions | Q 3.2

Complete the statement given below by filling in the blank with the correct word/s from the word/s given below

____________ is an example of a pollutant present in the air.

  • helium

  • hydrogen sulphide

Objective Type Questions | Q 3.3

Complete the statement given below by filling in the blank with the correct word from the words given:

The component of air used in photosynthesis is ______ and the products of photosynthesis is oxygen.

  • oxygen

  • carbon dioxide

  • nitrogen

Objective Type Questions | Q 3.4

Complete the statement given below by filling in the blank with the correct word from the words given:

The product formed which is common to both combustion and respiration is ______.

  • oxygen

  • carbon dioxide

  • nitrogen dioxide

Objective Type Questions | Q 3.5

Complete the statement given below by filling in the blank with the correct word from the words given:

The component of air which is variable in air above sea level and in air in general ______.

  • oxygen

  • nitrogen

  • water vapour

Objective Type Questions | Q 4.01

Name the following:

The product formed when phosphorus burns in oxygen.

Objective Type Questions | Q 4.02

Name the following:

The layer of atmosphere which contains the ozone layer.

Objective Type Questions | Q 4.03

Name the following:

The active component of air which supports combustion and is used up in burning

Objective Type Questions | Q 4.04

Name the following:

The main, rare (inert) gas present in air.

Objective Type Questions | Q 4.05

Name the following:

The component of air which is present more in industrial areas.

Objective Type Questions | Q 4.06

Name the following:

The type of bacteria which directly absorb nitrogen from the air and converted soluble nitrates in the soil.

Objective Type Questions | Q 4.07

Name the following:

The product of respiration released in exhaled air, other than carbon dioxide.

Objective Type Questions | Q 4.08

Name the following:

An inert gas which has a low boiling point and is used for producing very low temperatures

Objective Type Questions | Q 4.09

Name the following:

A process which removes carbon dioxide from the air.

Objective Type Questions | Q 4.1

Name the following:

The component of air which does not support combustion.

Objective Type Questions | Q 5.1

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

The mesosphere in the atmosphere, contains most of the air, fit for respiration

  • True

  • False

Objective Type Questions | Q 5.2

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

The percentage of carbon dioxide in the air is between 0.2 to 0.4%.

  • True

  • False

Objective Type Questions | Q 5.3

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

Carbon dioxide, water vapour and energy in the form of heat are evolved during respiration.

  • True

  • False

Objective Type Questions | Q 5.4

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

Photosynthesis is a process by which green plants prepare their own food in the presence of sunlight and chlorophyll.

  • True

  • False

Objective Type Questions | Q 5.5

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

Air is a mixture and not a compound since the components of air cannot be separated by physical methods.

  • True

  • False

Objective Type Questions | Q 6.1

Give word equation for the following conversion:

Nitrogen of the air to nitric oxide

Objective Type Questions | Q 6.2

Give word equation for the following conversion:

Nitric oxide to nitrogen dioxide

Objective Type Questions | Q 6.3

Give word equation for the following conversion:

Nitrogen dioxide to nitric acid

Objective Type Questions | Q 6.4

Give word equation for the following conversion:

Nitric acid to soluble nitrates in the soil

Objective Type Questions | Q 6.5

Give word equation for the following conversion:

Carbon dioxide in the air to carbohydrates in plants.

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Chapter 5: Air and Atmosphere

ExerciseObjective Type Questions
Class 6 New Simplified Middle School Chemistry - Shaalaa.com

Viraf J. Dalal solutions for Class 6 New Simplified Middle School Chemistry chapter 5 - Air and Atmosphere

Viraf J. Dalal solutions for Class 6 New Simplified Middle School Chemistry chapter 5 (Air and Atmosphere) 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 New Simplified Middle School 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. Viraf J. Dalal 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 New Simplified Middle School Chemistry chapter 5 Air and Atmosphere are Concept of Percentage Composition of Air, Uses of the Components Present in Air, Importance of Nitrogen, Atmosphere, Concept of Air.

Using Viraf J. Dalal Class 6 solutions Air and Atmosphere 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 Viraf J. Dalal Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 6 prefer Viraf J. Dalal Textbook Solutions to score more in exam.

Get the free view of chapter 5 Air and Atmosphere Class 6 extra questions for Class 6 New Simplified Middle School Chemistry and can use Shaalaa.com to keep it handy for your exam preparation

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