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प्रश्न
What is the source of water in the following?
Wells
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उत्तर
Wells – Groundwater
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संबंधित प्रश्न
Give balanced chemical equation for the reaction of water with Sodium oxide.
Name the gas produced when chlorine is dissolved in water and exposed to sunlight.
Give reason of Carbonated drinks are bottled under high pressure.
Water has ...................... density and .................. volume at 4°C.
Freezing mixture contains ............. and .............
Match the statements in column A with that in column B.
| Column A | Column B |
| (a) deliquescent substance | (1) sodium bicarbonate |
| (b) hygroscopic substance | (2) magnesium chloride |
| (c) efflorestance substance | (3) conc. sulphuric acid |
| (d) substance causing temporary hardness | (4) washing soda |
Describe the water-cycle in nature.
Give any three important uses of water.
Answer the following question:
Name two gases dissolved in natural water.
State whether the given statement are true or false. If true, write the reason.
Ganga−Brahmaputra plain of India is an overpopulated region.
State whether the given statement are true or false. If true, write the reason.
Water availability per person in India is declining.
What causes the violence associated with torrential rain?
How do fishes and aquatic animals survive when the pond gets covered with thick ice?
Give reason for the following:
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Open drain system is a breeding place for which of the following?
Why should we not throw used tea leaves into sink?
Fill in the blanks in the following statements using words given in the box.
| 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.
