Advertisements
Advertisements
प्रश्न
Name a ‘pure form’ and an,‘impure form’ of water in the natural state.
Advertisements
उत्तर
Rain water – pure natural water.
Sea water, lake water – impure form of natural water.
APPEARS IN
संबंधित प्रश्न
Give balanced chemical equation for the reaction of water with Sodium .
.................... is the purest form of natural water.
How is aquatic life benefited by the fact that water has maximum density at 4oC?
What happens when a spoonful of sugar, sawdust, and soil are added to a glass of water?
Water changes to ice at ______.
______ plays a vital role in the evolution and survival of life.
How is the life of organisms living in water affected when water gets polluted?
A jumbled word is given here. Write the correct form of the word.
CHARREGE
Match the items of Column I with the items of Column II with reference to sewage.
| Column I | Column II | ||
| (a) | Inorganic impurities | (i) | phosphorus and nitrogen |
| (b) | Organic impurities | (ii) | nitrates and phosphates |
| (c) | Nutrients | (iii) | cholera and typhoid |
| (d) | Bacteria | (iv) | pesticides and herbicides |
Fill in the blanks in the following statements using words given in the box.
| air, handpumps, cholera, water, large, ground |
A very ______ number of our people defecate in the open. It may cause ______ pollution and soil pollution. Both the surface water and ______ water get polluted. ______ water is the source for wells, tubewells and ______. Thus it becomes the most common route for ______ borne diseases like ______, dysentery, etc.
