# NCERT Solutions for Class 8 Science Chapter 18- Pollution of Air and Water

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NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water- Air and Water are two of the most important natural resources for the survival of humans and other living organisms. The NCERT Class 8 Science chapter 18 Pollution of Air and Water describes the importance of air and water in human life and how it has been depreciated over decades. Study of this chapter along with appropriate NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water is important as far as your CBSE class 8 exams are concerned. You must have thought that why Tajmahal which is otherwise very beautiful looks dusty from outside. After studying the chapter, you will be able to solve such queries that you have in a day to day life and also the NCERT exercise to get correct NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water.

## What is air pollution?

Air pollution occurs when air gets mixed with unwanted substances which are harmful to both living and non-living beings. These unwanted substances are called as air pollutants such as smoke, dust, CFCs(Chlorofluorocarbons). Air pollutants release gases such as carbon monoxide, carbon dioxide, nitrogen oxides, methane, and sulfur dioxides. Increased air pollution leads to many respiratory problems. It also causes an increase in the levels of greenhouse gases like carbon dioxide can lead to global warming. In chapter Pollution of air and water class 8 CBSE, you will learn how global warming occurs. Further, before going to the NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water you can read the chapter and prepare your own Class 8 Science Chapter 18 Pollution of Air and Water notes.

## How air pollution can be prevented?

Air pollution can be reduced by planting trees, saying ‘No’ to crackers, using public transport or car pools. The details of this topic are mentioned in NCERT Class 8 Science Chapter 18.

## What is water pollution?

All of you must have heard about Mission Ganga! How did it become such a big mission to accomplish? River Ganga has been polluted and getting clean water has become a mission for everybody. Water Pollution is basically contamination of water with harmful contaminants such as sewage, agricultural chemicals or industrial waste. The water which is fit for drinking is known as potable water which we usually get through water purifiers. In NCERT Class 8 science Ch 8, you will learn about the common sources of water pollution in nature.

## How water pollution can be prevented?

Water is an essential resource, so prevention of water pollution is important and you all must take small steps that can further, save water. In CBSE class 8 science chapter 18 Pollution of air and water, you will learn about all these measures that can be taken to prevent water pollution.

After this basic understanding of Air and Water pollution, you can go through the pollution of air and water class 8 CBSE and can try NCERT questions of pollution of air and water

## NCERT grade 8 science Chapter 18 Pollution of Air and Water- Important topics

Below mentioned are the Topics and Subtopics of NCERT Class 8 science chapter 18  Pollution of Air and Water.

18.1 Air Pollution

18.2 How does air get polluted?

18.3 Case Study: The Taj Mahal

18.4 Greenhouse Effect

18.5 What can be done

18.6 Water Pollution

18.7 How does water get polluted

18.8 What is Potable water and how it is purified?

18.9 What can be done?

NCERT Class 8 Science Chapter 18 Pollution of Air and Water- Preparation tips

In order to prepare this chapter, write your own NCERT class 8 chapter 18 notes. Once you are done with the chapter reading and have gone through this introduction to pollution of air and water, you can try solving NCERT class 8 chapter 18 pollution of air and water worksheets. For better practice attempt as many NCERT quizzes for science chapter 18 as possible. For exam reference, see the questions given below

 Q. How does carbon dioxide content rise in the atmosphere? Ans. The carbon dioxide content rises due to excessive consumption of fossil fuels and excessive cutting of trees. Q. Does acid rain affects the soil? Why or why not.  Ans. Acid rains are rains with excessive amounts of acids such as nitric acid and sulphuric acid. When acid rain falls on the ground, the water seeps into the soil and increases its acid concentration. This causes problems in water and nutrient absorption by plants.

NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water:

Preparing the NCERT exercise of grade 8 Ch 18 is very important as far as the exams are concerned. You must prepare every question of NCERT science exercise. You can also refer to Questions and NCERT Solutions for class 8 Science Chapter 18 Pollution of Air and Water to get a better understanding of what kind of questions are asked in exams.

Below are the Questions and NCERT Solutions for class 8 Science Chapter 18- Pollution of Air and Water.

## NCERT Solutions For Science  Class 8- Chapter- Wise

 Chapter -1 Crop Production And Management Chapter -2 Microorganisms: Friends and Foe Chapter-3 Synthetic Fibres and Plastics Chapter-4 Materials: Metals and Non-Metals Chapter-5 Coal and Petroleum Chapter-6 Combustion and Flame Chapter-7 Conservation of Plants and Animals Chapter-8 Cell: Structure and Function Chapter-9 Reproduction in Animals Chapter-10 Reaching the age of adolescence Chapter-11 Force and Pressure Chapter-12 Friction Chapter-13 Sound Chapter-14 Chemical Effects of Electric Current Chapter-15 <"https://learn.careers360.com/ncert/ncert-solutions-class-8-science-chapter-15-some-natural-phenomena/" target="_self">Some Natural Phenomena Chapter-16 Light Chapter-17 Stars and The Solar System