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प्रश्न
Answer the following question.
Suggest three ways to conserve water.
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उत्तर
Three ways to conserve water:
(a) Rain-water harvesting
(b) Reducing wastage of water
(c) Replenishing ground water by promoting afforestation
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संबंधित प्रश्न
Give the molecular formula of water ?
Give one word for the following statement:
The gaseous form of water found in air .
Two gases found dissolved in natural water are
Answer the following question:
Why is acid added to water before electrolysis ?
How do fishes and aquatic animals survive when the pond gets covered with thick ice?
Give a balanced equation for the following conversion:
Potassium oxide to a strong alkali.
Name one substance which is ‘deliquescent’.
Match the terms in List I with the correct answers in List II.
| List I | List II |
| 1. Solubility in a given solvent decreases with an increase in temperature. | A: Na2SO4.10H2O |
| 2. A white efflorescent crystal | B: NaOH |
| 3. A hygroscopic dehydrating agent | C: Ca(HCO3)2 |
| 4. A deliquescent alkali | D: conc. H2SO4 |
| 5. A substance present in temporary hard water | E: CaSO4 |
Look at the map of Tamilnadu showing annual rainfall and answer the questions given below
- Identify the districts that get only low annual rainfall in Tamilnadu.
- Identify the districts that get a medium annual rainfall in Tamilnadu.
- State the districts that enjoy high annual rainfall in Tamilnadu.
A jumbled word is given here. Write the correct form of the word.
QUIFERA
