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प्रश्न
Give a reason why :
Polluted water causes disease.
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उत्तर
Polluted water acts as a carrier for germs which causes various diseases.
संबंधित प्रश्न
Clear, transparent water is always fit for drinking. Comment.
Define pollution. “Industries are pouring poison in water” - Explain
Study the picture given below and answer the following questions :
What is a ‘Pollutant’ ? Explain the term.
List two major harmful effects of the following:
Rivers contaminated with sewage.
Why does water need conservation even though large oceans surround the landmasses?
Which of the following is not a way to conserve water?
A pond contains clean water. Which of the following activities will produce least pollution of water?
Phosphate containing fertilisers cause water pollution. Addition of such compounds in water bodies causes:
(i) enhanced growth of algae.
(ii) decrease in amount of dissolved oxygen in water.
(iii) deposition of calcium phosphate.
(iv) increase in fish population.
Study the picture given below and answer the question:
How does water get polluted?
Thermal power plants give out a lot of hot waste water.
