Advertisements
Advertisements
प्रश्न
Explain the Term: Pollutant
उत्तर
The substance which on adding to the environment may cause harm is called pollutant.
APPEARS IN
संबंधित प्रश्न
Differentiate between primary pollutants and secondary pollutants.
State any two harmful effects of noise pollution on human health.
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 |
Which are invisible pollutants?
Classify the following pollutions into natural and man-made categories.
Sewage, dust, pollen grains, chemical fertilizers, vehicular smoke, algae, pesticides, waste of animals and birds.
Name the following pollutants:
The chemical element which caused minimata disease in Japan.
What are primary pollutants?
Distinguish between the following :
Biodegradable and Non-biodegradable Pollutants
Think of the objects in your home. Just keep in mind, the books, toys, furniture, food materials, and even pets of your home. These living and non-living things together make your home. Look at the following picture and list out the living and non-living things, in the pond.
