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Class 11 Chemistry Practice Test: Environmental Chemistry - Water Pollution
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Avg score: 57% Most missed: “Pick out the source of organic wastes pollutant from the following.”
Water pollution (or aquatic pollution) is the contamination of water bodies, usually as a result of human activities, so that it negatively affects its uses. Water pollution is either surface water pollution or groundwater pollution. Pollution is the result of the cumulative effect over time. Pollution may take the form of toxic substances (e.g., oil, metals, plastics, pesticides, persistent organic pollutants, industrial waste products), stressful conditions (e.g., changes of pH, hypoxia or anoxia, increased temperatures, excessive turbidity, changes of salinity), or the introduction of... Show more
Class 11 Chemistry Practice Test: Environmental Chemistry - Water Pollution
Time left 00:00
10 Questions

1. What does the addition of phosphate fertilizers into water lead to?
2. What is an easily identified source of pollution called as?
3. The maximum limit of which of the following in drinking water should be 50 ppb?
4. Pick out the source of organic wastes pollutant from the following.
5. Water should be tested for fluoride ion concentration for drinking purposes.
6. Identify the bacteria not found in human excreta that causes gastrointestinal diseases.
7. What is the full form of PCB(in the context of chemistry)?
8. What is the amount of oxygen required by bacteria to break down organic matter present in certain volume of sample of water is called?
9. Plants always take in carbon dioxide and release oxygen.
10. Plants always take in carbon dioxide and release oxygen.