Advertisements
Advertisements
प्रश्न
Write True or False for the following statement.
Tap water does not contain dissolved impurities.
विकल्प
True
False
Advertisements
उत्तर
False
Correct: Tap water contains dissolved impurities.
APPEARS IN
संबंधित प्रश्न
Give the percentage of water in the following:
Eggs
Why is water important for plants and animals?
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)
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.
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 soluble in water
Analogy
Ground water : ______ :: Surface-water : lakes
Transpiration is a process in which plants ______.
