A. Choose the correct answer:
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A. Choose the correct option.
3. A liquid which dissolves other substances in it is called :
- b. solvent
4. Polluted water can cause :
- d. all of these
5. Which of these sources of water contains dissolved salts beneficial for health ?
- c. Rainwater
B. Fill in the blanks :
1. Solubility of a substance generally increases with increase in temperature.
2. The water which is fit and safe for drinking is called potable water.
3. Oil spills from huge tankers is the major cause of road pollution/accidents.
4. Gases like oxide of Sulphur and Nitrogen dissolve in rainwater causing acid rain.
5. Water is called as universal solvent.
6. Water helps in the germination of seeds and growth of plants.
7. Water regulates the temperature of our body by the process of evaporation.
8. A homogeneous mixture of a solute in a solvent is called a solution.
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