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प्रश्न
Give the importance of dissolved air – in water.
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उत्तर
Air : Air containing various gases gives taste to water.
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संबंधित प्रश्न
Why is water essential for life?
What is the composition of water? In what volume its elements combine?
Name or state the following:
A deliquescent salt of a trivalent metal.
Write a few slogans of your own on the topic “Save Water”
______ plays a vital role in the evolution and survival of life.
State whether the following statement is True or False. If false, give the correct statement.
Snow and ice both are solid forms of water
Which of the following is waste water?
Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.
Why should we not throw used tea leaves into sink?
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 |
