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प्रश्न
Two gases found dissolved in natural water are
पर्याय
oxygen and carbon dioxide
hydrogen and oxygen
sulphur dioxide and hydrogen
chlorine and ammonia
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उत्तर
oxygen and carbon dioxide
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संबंधित प्रश्न
What are the main causes of water pollution ? How can it be controlled ?
Household detergents contain mainly ______ and pollute water bodies.
State any two sources of water pollution.
Give the influence of pressure.
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How is the life of organisms living in water affected when water gets polluted?
Complete the following chart by writing appropriate words in the boxes marked (a) to (e).
Match the items of Column I with the items of Column II with reference to sewage.
| Column I | Column II | ||
| (a) | Inorganic impurities | (i) | phosphorus and nitrogen |
| (b) | Organic impurities | (ii) | nitrates and phosphates |
| (c) | Nutrients | (iii) | cholera and typhoid |
| (d) | Bacteria | (iv) | pesticides and herbicides |
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| air, handpumps, cholera, water, large, ground |
A very ______ number of our people defecate in the open. It may cause ______ pollution and soil pollution. Both the surface water and ______ water get polluted. ______ water is the source for wells, tubewells and ______. Thus it becomes the most common route for ______ borne diseases like ______, dysentery, etc.
Fill in the blanks selecting words from the following list
snow, rain, clouds, vapour, evaporation, transpiration.
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