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प्रश्न
What is pollution?
उत्तर
Pollution is any undesirable change that takes place in the environment which is harmful to both living and non-living things.
संबंधित प्रश्न
Given below is a representation of a type pollution.
Study the picture and answer the questions :
1) Name the type of pollution shown in the picture
2) Name one source of this pollution
3) How does this pollution affect human health?
4) Write one measure to reduce this pollution
5) State one gaseous compound that leads to the depletion of the ozone layer and creates ‘Ozone holes’.
Which are visible pollution known to you?
Construct two slogans each on air, water and soil pollution.
| Column 1 | Column 2 | ||
| 1 | SPM | a | Release of methane |
| 2 | Ozone hole | b | Add to greenhouse effect |
| 3 | Melting of polar ice | c | Affects oxygen transport by blood |
| 4 | Acid rain | d | Rise in sea level |
| 5 | Green house effect | e | Bronchitis & inflammation of the lungs |
| 6 | Melting of permafrost | f | Erosion of buildings |
| 7 | Carbon monoxide | g | Chlorofluorocarbons |
What is known as smog? What harm is done by smog especially in winter?
Distinguish between the following :
Quantitative Pollutants and Qualitative Pollutants.
What’s the solution?
Rivers and lakes are filled with water hyacinth.
Give two causes of air pollution.
See the diagram and answer the following question
Explain what is happening in the picture?
Complete the crossword puzzle with the help of clues given below :
Across
1. Pollutant which was used in refrigerators and air conditioners. (18)
3. Produced on incomplete combustion of fuels (14)
6. This chemical protects our crops and is washed into water bodies from the field. (9)
Down
2. This layer protects us from harmful ultraviolet rays. (5)
4. It is essential for combustion. (6)
5. Disease which is caused by drinking contaminated water. (7)
7. River which is famous in India and sustains most of the northern, central and eastern Indian population. (5)
