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प्रश्न
What is needed to construct a rain water harvesting pit?
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उत्तर
Boulders, gravels, and Coarse sand are needed to construct a rain water harvesting pit.
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संबंधित प्रश्न
Answer the following question:
What is the chemical composition of water ? Give its molecular formula.
Select the correct answer of the following statement:
A solution which can pass through a filter paper but not through a semipermeable membrane.
Complete the statement by filling the blank with the correct word from the option.
The ratio of hydrogen & oxygen in water is ____.
State the meaning of the term ‘water pollution’. State how you would find out, the different sources of pollution of water bodies in the locality.
Select the correct word from the words in option to complete the sentence:
Dissolved air in water contains a ____ percentage of oxygen than ordinary air.
True or false? Correct the wrong statement.
We get rainwater throughout the year.
In the coastal areas, wind current moves from the sea towards the land during the day; but during the night it moves from land to the sea. Discuss the reason.
Match Column I with Column II
| Column I | Column II | ||
| (a) | Ground water | (i) | Solid form of water |
| (b) | Bawri | (ii) | Wastage of water |
| (c) | Snow | (iii) | Water management |
| (d) | Drip irrigation | (iv) | Small water |
| (e) | Leaking taps | (v) | Water table |
From where do the following usually get water? In which form is water present in them?
Aquifer
Why should we not throw used tea leaves into sink?
