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प्रश्न
Write True or False for the following statement.
Tap water does not contain dissolved impurities.
विकल्प
True
False
उत्तर
False
Correct: Tap water contains dissolved impurities.
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संबंधित प्रश्न
Give the importance of water in life processes
Explain how water plays an important role in the Industry.
Explain how water plays an important role in Agriculture.
State whether the following statement is true or false. If false, write the correct statement.
Purification of water is carried out to remove – dissolved gases e.g. carbon dioxide and dissolved minerals like magnesium salts.
State whether the following statement is true or false. If false, write the correct statement.
On boiling water exists in the liquid state.
State whether the following statement is true or false. If false, write the correct statement.
Respiration uses up water from the atmosphere.
Match the statements in List I, 1-10 with their correct answer in List II, A to J.
| List I | List II |
| 1. Sodium carbonate and water | A: Seawater |
| 2. Chemical used in sedimentation during purification of water | B: The preferred place for an organism |
| 3. vapourisation | C: Liquid state |
| 4. Kerosene and water | D: Aqueous solution |
| 5. A solution which can dissolve more of solute at a given temperature | E: Dissolved gases and minerals |
| 6. Water as a habitat for marine life | F: Unsaturated solution |
| 7. A water-borne disease | G: Immiscible mixture |
| 8. Existence of water between 0°C and 100°C | H: Liquid to a gaseous state |
| 9. Taste in water is due to | I: Dysentery |
| 10. The most impure form of water | J: Alum |
Explain the meaning of the following term:
Saturated solution
Explain the meaning of the following term:
The gaseous state of water in the air
Analogy
Ground water : ______ :: Surface-water : lakes
