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Viraf J. Dalal solutions for Class 9 Simplified ICSE Chemistry chapter 8 - Atmospheric Pollution [Latest edition]

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Class 9 Simplified ICSE Chemistry - Shaalaa.com

Chapter 8: Atmospheric Pollution

Textbook QuestionsAdditional QuestionsAtmospheric pollution

Textbook Questions

Viraf J. Dalal solutions for Class 9 Simplified ICSE Chemistry Chapter 8 Atmospheric Pollution Textbook Questions

Textbook Questions | Q 1.1

Name any two:

Natural sources of atmospheric pollution.

Textbook Questions | Q 1.2

Name any two:

Gases that are responsible for the formation of acid rain. 

Textbook Questions | Q 1.3

What do you mean by global warming?

Textbook Questions | Q 2

State two effects of ozone depletion.

Textbook Questions | Q 3.1

What is meant by the term ‘acid rain’. Give any two impacts of acid rain.

Textbook Questions | Q 3.2

Explain the term 'global warming'. State two ways by which global warming can be reduced.

Textbook Questions | Q 3.3

State an advantage of using solar energy.

Textbook Questions | Q 4.1

Explain the methods of preventing acid rain.

Textbook Questions | Q 4.2

State an advantage of CNG (Compressed Natural Gas).

Textbook Questions | Q 4.3

State how CFCs break ozone in the stratosphere.

Textbook Questions | Q 4.4

Describe the methods of saving the ozone layer.

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Additional Questions

Viraf J. Dalal solutions for Class 9 Simplified ICSE Chemistry Chapter 8 Atmospheric Pollution Additional Questions

Additional Questions | Q 1

State what is meant by the term ‘atmospheric pollution’. Name four gaseous atmospheric pollutants.

Additional Questions | Q 2.1

What is acid rain?

Additional Questions | Q 2.2

State the two forms of deposition of acid rain with suitable examples of each form of deposition.

Additional Questions | Q 3

State the natural and man-made sources of the two pollutants responsible for acid rain.

Additional Questions | Q 4

Burning of fossil fuels is an important source of the pollutant – ‘oxides of sulphur’ responsible for acid rain.
State what are ‘fossil fuels’. Name the principal fossil fuels. State why sulphur dioxide is emitted on burning a fossil fuel. Give a balanced equation for the same.

Additional Questions | Q 5

During metallurgy – smelting plants produce sulphur dioxide, when metallic sulphides are roasted in air. Give a balanced equation for the same.

Additional Questions | Q 6

State why high temperatures in internal combustion engines release pollutant – oxides of nitrogen.

Additional Questions | Q 7

State why natural rain water produced in an unpolluted atmosphere is slightly acidic. Give a balanced equation of the same.

Additional Questions | Q 8

Give balanced equations for the formation of sulphuric acid in acid rain, when’ a fossil fuel is burnt in an electric power station.

Additional Questions | Q 9

Starting from nitrogen in air, enlist the reactions with the help of balanced equations, which result in the conversion of nitrogen in an internal combustion- engine, to the acids formed which are responsible for acid rain.

Additional Questions | Q 10

Explain the basic function of a catalytic converter in an internal combustion engine.

Additional Questions | Q 11

State why acid rain causes ‘nutrient leaching’ when it falls on the earth.

Additional Questions | Q 12

Give reasons why acid rain affects marine organisms.

Additional Questions | Q 13

State the impact of acid rain on the environment, other than soil chemistry and water bodies.

Additional Questions | Q 14

Enumerate the ways by which acid rain can be controlled to prevent its adverse effects on the environment.

Additional Questions | Q 15

State what are ‘green house gases’ and name the major green house gases.

Additional Questions | Q 16

State what is mean by the term – ‘green house effect’ and state its consequence.

Additional Questions | Q 17

Explain how global warming takes place in the presence of green house gases. Give a reason why the surface temperature of earth is maintained in absence of green house gases.

Additional Questions | Q 18

Give balanced equations for formation of carbon dioxide – a major green house gas, during combustion of fossil fuels.

Additional Questions | Q 19

State two natural and two man-made sources of the green house gas – methane.

Additional Questions | Q 20

‘Oxides of nitrogen namely nitrous oxide, are released into the atmosphere from varied sources’. Explain the statement with relevant sources.

Additional Questions | Q 21

State the impact of green house gases on geographic, climatic and agricultural conditions.

Additional Questions | Q 22

Give the options for reducing green house gases by use of fuels better than fossil fuels.

Additional Questions | Q 23

State three renewable energy sources which cause less or no pollution.

Additional Questions | Q 24

Explain how promoting ‘afforestation’ and checking ‘deforestation’ reduces the release of green house gases.

Additional Questions | Q 25

What is an ozone layer. State the distribution of the ozone layer in the stratosphere.

Additional Questions | Q 26

Give balanced equations for formation of ozone molecules from oxygen molecules. What type of reaction takes place, during the formation.

Additional Questions | Q 27

How is the ‘ozone oxygen cycle’ maintained in the stratosphere and state what disturbs the balance, resulting in ozone depletion or destruction, Give balanced equation for the same.

Additional Questions | Q 28

Enumerate the damage to humans, animals and plants caused due to ozone depletion.

Additional Questions | Q 29

Name the chemicals responsible for destruction of the ozone layer. State the main chemical from these chemicals, which is responsible for more than 80% ozone depletion.

Additional Questions | Q 30

State the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].

Additional Questions | Q 31

Enumerate methods of protecting the ozone layer and preventing its depletion.

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Atmospheric pollution

Viraf J. Dalal solutions for Class 9 Simplified ICSE Chemistry Chapter 8 Atmospheric Pollution Atmospheric pollution

Atmospheric pollution | Q 1.1

Select the correct answer from the following statement:

The major pollutant released during burning of fossil fuels.

  • Carbon monoxide

  • Sulphur dioxide 

  • Hydrogen sulphide

Atmospheric pollution | Q 1.2

Select the correct answer from the following statement:

The green house gas which on combustion produces another green house gas.

  • Nitrous oxide

  • Ozone

  • Methane [CH] produces CO2 

Atmospheric pollution | Q 1.3

Select the correct answer from the following statement:

The gas which in presence of U.V. light gives two atoms of the same gas.

  • Oxygen 

  • Ozone

  • Carbon dioxide

Atmospheric pollution | Q 1.4

Select the correct answer from the following statement:

A chemical responsible for ozone depletion.

  • Methyl acetylene

  • Methyl chloride 

  • Methanol

Atmospheric pollution | Q 1.5

Select the correct answer from the following statement:

A renewable source of energy which causes minimum or no pollution.

  • Fossil fuel

  • L.P.G.

  • Hydro power

Atmospheric pollution | Q 2.1

Give balanced equation for the following conversion [one or two steps].

Sulphur trioxide to sulphuric acid – a constituent of acid rain.

Atmospheric pollution | Q 2.2

Give balanced equation for the following conversion [one or two steps].

Nitrogen to nitrogen dioxide – in an internal combustion engine.

Atmospheric pollution | Q 2.3

Give balanced equation for the following conversion [one or two steps].

Methane to carbon dioxide – a green house gas.

Atmospheric pollution | Q 2.4

Give balanced equation for the following conversion [one or two steps].

A molecule of ozone to two molecules of oxygen gas.

Atmospheric pollution | Q 2.5

Give balanced equation for the following conversion [one or two steps].

Oxygen to ozone gas by photolysis.

Atmospheric pollution | Q 3.1

Give reason for the following:

Natural rain water does not have a pH of 7 [i.e. neutral]

Atmospheric pollution | Q 3.2

Give reason for the following:

A catalytic converter in an internal combustion engine reduces pollution.

Atmospheric pollution | Q 3.3

Give reason for the following:

In absence of green house gases the surface temperature of the earth is maintained.

Atmospheric pollution | Q 3.4

Give reason for the following:

The formation of ozone involves a chemical reaction called photolysis.

Atmospheric pollution | Q 3.5

Give reason for the following:

Destruction of ozone layer is harmful for both humans and plants.

Atmospheric pollution | Q 4.1

Name or state the following:

An atmospheric pollutant produced during lightening discharge.

Atmospheric pollution | Q 4.2

Name or state the following:

A form of wet deposition of acid rain other than rain water.

Atmospheric pollution | Q 4.3

Name or state the following:

An atmospheric pollutant responsible for both global warming and ozone depletion.

Atmospheric pollution | Q 4.4

Name or state the following:

A green house gas which contains carbon and hydrogen only.

Atmospheric pollution | Q 4.5

Name or state the following:

The atom which reacts with oxygen to form ozone.

Atmospheric pollution | Q 5.1

Acid rain has adverse effect on the environment State the effect acid rain has on the following: 

The nutrients present in the soil.

  • Increases

  • Decreases

Atmospheric pollution | Q 5.2

Acid rain has adverse effect on the environment State the effect acid rain has on the following: 

The acidity of the soil.

  • Increases

  • Decreases

Atmospheric pollution | Q 5.3

Acid rain has adverse effect on the environment State the effect acid rain has on the following: 

The fertility of the soil.

  • Increases

  • Decreases

Atmospheric pollution | Q 5.4

Acid rain has adverse effect on the environment State the effect acid rain has on the following: 

The pH of water bodies.

  • Increases

  • Decreases

Atmospheric pollution | Q 5.5

Acid rain has adverse effect on the environment State the effect acid rain has on the following: 

The rate of photosynthesis in plants.

  • Increases

  • Decreases

Atmospheric pollution | Q 6.1

The diagram represents the green house effect.

State why the effect is called ‘global warming’.

Atmospheric pollution | Q 6.2

The diagram represents the green house effect.

Name a process which (a) releases (b) absorbs – green house gas – CO2

Atmospheric pollution | Q 6.3

The diagram represents the green house effect.

State an advantage of use of C.N.G. over combustion of fossil fuels.

Atmospheric pollution | Q 6.4

The diagram represents the green house effect.

Which of the following – biofertilizers or nitrogenous fertilizers reduces the green house gas – CO2. Explain.

Atmospheric pollution | Q 6.5

The diagram represents the green house effect.

Does the sea level rise or fall due to global warming. Explain.

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Chapter 8: Atmospheric Pollution

Textbook QuestionsAdditional QuestionsAtmospheric pollution
Class 9 Simplified ICSE Chemistry - Shaalaa.com

Viraf J. Dalal solutions for Class 9 Simplified ICSE Chemistry chapter 8 - Atmospheric Pollution

Viraf J. Dalal solutions for Class 9 Simplified ICSE Chemistry chapter 8 (Atmospheric Pollution) 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 9 Simplified ICSE 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 9 Simplified ICSE Chemistry chapter 8 Atmospheric Pollution are Acid Rain - Composition, Cause and Its Impact, Meaning of Global Warming, Effect of Global Warming, Sources of Greenhouse Gases and Ways of Reducing Their Presence in the Atmosphere, Ozone Layer, Atmospheric Pollution, Air Pollution.

Using Viraf J. Dalal Class 9 solutions Atmospheric Pollution 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 9 prefer Viraf J. Dalal Textbook Solutions to score more in exam.

Get the free view of chapter 8 Atmospheric Pollution Class 9 extra questions for Class 9 Simplified ICSE Chemistry and can use Shaalaa.com to keep it handy for your exam preparation

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