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प्रश्न
Excess of fluoride in drinking water causes:
पर्याय
Lung disease
Intestinal infection
Fluorosis
None of the above
MCQ
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उत्तर
Fluorosis
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पाठ 13: Environmental Issues - Evaluation [पृष्ठ २३५]
संबंधित प्रश्न
What are the major causes of water pollution? Explain.
A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.
What are the common sources of oil spills?
What are some types of pollutants found in water?
We should save water.
Give few steps to save water.
Water pollution can spread ________ diseases in man.
Mention the standards prescribed by BIS for quality of drinking water.
Read the paragraph and answer the questions following it.
| Water is essential for life. Without water there would be no life. We usually take water as granted for its purity, but we must ensure the quality of water. Pollution of water originates from human activities. Through different paths, pollution reaches to groundwater. Easily identified source or place of pollution is called as point source, e.g. municipal and industrial discharge pipes, where pollutants enter the water source. Non-point sources of pollution are those where a source of pollution cannot be easily identified, e.g. agricultural run-off, acid rain, etc. |
- How do you classify the various sources of water pollution?
- What are the point sources of water pollution?
- Name any two non-point sources of water pollution?
Define the following term:
Oil spills
