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प्रश्न
With an example, state what are secondary pollutants?
उत्तर
The pollutants that are formed in the atmosphere by chemical interactions between primary pollutants and atmospheric constituents are known as secondary pollutants. Examples of secondary pollutants are Sulphur trioxide, Ozone, Peroxyacetyl Nitrate (PAN), Ketones, etc.
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संबंधित प्रश्न
Read the passage and identify the sentences expressing types of pollution.
Nilesh is a student of Std. VII and lives in urban area. It takes about an hour to go to the school by bus. He faces the heavy traffic of two wheelers, four wheelers, rickshaws, buses while going to school. He is facing the problem of asthma since last few days, Doctors recommended him to stay away from urban area. Since then, his mother sent him to the village of his maternal uncle, Nilesh saw the heaps of garbage at many places in village. Foul smell of human and animal wastes was present at many places. Blackish water with foul smell was flowing in a stream. He developed some abdominal disease within few days.
Match the pairs from 'A' and 'B' columns and explain the effect of pollution on human health.
| Column 'A' | Column 'B' |
| 1. Water containing cobalt | a. Mental retardedness |
| 2. Methane gas | b. Paralysis |
| 3. Water containing lead | c. Inflammation of lungs. |
| 4. Sulphur dioxide | d. Skin cancer |
| 5. Nitrogen dixoide | e. Irritation of eyes |
True or false.
Water does not get polluted by washing the cloths in running water of river.
The picture below shows a campaign recently started by the Indian Government.
Who launched this campaign and when?
True or False:
The average home creates more pollution then does the average car.
True or False:
Indoor pollution is 10 times more toxic than outdoor pollution.
What is radioactive pollution?
Name the following:
The undesirable change in the environment leading to its deterioration.
Give two examples of gaseous air pollutants.
