Advertisements
Advertisements
प्रश्न
Why do wet clothes placed on a clothes line get dry after some time? Explain.
Advertisements
उत्तर
After a while, wet clothing is hung out to dry because the sun’s heat helps the water to evaporate. Evaporation is the process of converting liquid water into water vapour.
APPEARS IN
संबंधित प्रश्न
Give the percentage of water in the following:
Eggs
Give the percentage of water in the following:
Bread
Give the importance of water in household purpose
Complete the statement by filling in the blanks with the correct words.
Water generates ______in hydroelectric power stations and ________in boilers for industrial applications.
(carbon dioxide/steam/heat/electricity)
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 |
Name two gases which are insoluble in water.
The human body requires ______ liters of water per day for proper functioning.
Analogy:
Napier Bridge area: ______:: Pallikkaranai: Wet land.
Transpiration is a process in which plants ______.
How do the areas covered with concrete affect the availability of ground water?
