Skip to main content

8th Class Science Notes- Pollution of Air and Water

8th Class Science Notes- Pollution of Air and Water

Air pollution is basically the occurrence of the chemical in the air in quantities which are harmful to human health and the environment.
The common air pollutants and their main sources:-
  • Particulate Matter: – It is made up of tiny particles suspended in air. Major particulate matter sources are volcanic eruption, dust storm, burning of fossil fuel in thermal plants and forest fire. They are also present in exhaust fumes of automobiles and power plants as soot, fly ash and lead particles.
  • Chlorofluorocarbons (CFCs) – They are commonly used as coolants in refrigerators, air conditioners and as propellants in aerosol spray cans. They are also used in home insulation, plastic foam, and throwaway metallic cans.
  • Burning of fossil fuels- They are coal and petroleum in thermal power plants and automobile releases oxides of sulphur and nitrogen into the air.
  • Burning of carbon– Carbon-rich fuels such as firewood, coal, and petroleum releases carbon dioxide and carbon monoxide into the atmosphere.

Watch interesting videos and learn causes of air pollution with CBSE Class 8th Science.  
For 8th Class NCERT solutions please visit our website. www.takshilalearning.com.
Labels:

Comments

Post a Comment

Thank you we will contact ASAP.

Popular posts from this blog

Lessons-Worksheets-Question Papers-CBSE Class 2 English

Lessons-Worksheets-Question Papers-CBSE Class 2 English CBSE 2nd Class English – One and Many  In this blog, we share the spelling rules used in the concept of  One  and Many. When there is only one of a naming word (noun), it is said to be a  singular noun . When a noun shows more than one, it is said to be in the  plural . We can add  –S, -es, -ves or ies  to show that there is more than one noun.  For example,  we say many birds, four biscuits, six brushes. But for the students of  Class 2 , it’s very difficult and confusing to understand where to use  s , es, ves or ies  in the form of many. Don’t worry, it looks difficult, but it is very easy as in grammar each concept has a set of rules that need to practice. Noun ending with  –s, -x, -o, -sh, -ch, and –ss  form plurals by taking  –es. Look at these pairs of words: Bus – Buses Brush – Brushes Continue ..... Click here ...
Post a Comment
Read more

Class 3 English Practice Grammar Worksheet -The Adverb

 Class 3 English Practice Grammar Worksheet -The Adverb Class 3 English – The Adverb – Kinds of Adverb Fill in the blanks with suitable Adverbs of place. Choose from the box.  Up               outside                       everywhere                 back                down      away          here                           there                     ...
Post a Comment
Read more

CBSE class 10th online coaching

CBSE  class  10: Takshila Learning provides world best  quality of e-learning material for CBSE Board.  we've got  adopted  trendy  techniques  to show  our students through  on-line   moreover  as offline. We  square measure  providing all courses CBSE  category  10: Click Here For Demo Class....
Post a Comment
Read more