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प्रश्न
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 |
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उत्तर
| List I | List II |
| 1. Sodium carbonate and water | D: Aqueous solution |
| 2. Chemical used in sedimentation during purification of water | J: Alum |
| 3. vapourisation | H: Liquid to a gaseous state |
| 4. Kerosene and water | G: Immiscible solution |
| 5. A solution which can dissolve more of solute at a given temperature | F: Unsaturated solution |
| 6. Water as a habitat for marine life | B: A preferred place for an organism |
| 7. A water-borne disease | I: Dysentery |
| 8. Existence of water between 0°C and 100°C | C: Liquid state |
| 9. Taste in water is due to | E: Dissolved gases and minerals |
| 10. The most impure form of water | A: Seawater |
संबंधित प्रश्न
Give the percentage of water in the following:
Watermelon
State whether the following statement is true or false. If false, write the correct statement.
If ‘X’ g. of solute is added to 100 g. of water at t°C and the solution formed is a saturated solution, then ‘X’ g. is the solubility of the solute.
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.
Sodium carbonate and sodium sulphate do not form an aqueous solution.
Explain the meaning of the following term:
Saturated solution
Name the following
The natural process by which circulation of water takes place from the earth’s surface to the atmosphere and back to the earth’s surface.
Analogy
Ground water : ______ :: Surface-water : lakes
Analogy:
Napier Bridge area: ______:: Pallikkaranai: Wet land.
Which of the following activity does not involve use of water?
Why do wet clothes placed on a clothes line get dry after some time? Explain.
