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प्रश्न
What is water cycle? What is its importance?
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उत्तर
Water cycle: The change of water from one form to another in nature which results in a continuous circulation of water from earth’s surface to the atmosphere and from the atmosphere back to the earth’s surface is called water cycle.
Importance of water cycle:
1. It assures a continuous supply of water to us.
2. In controlling the climatic conditions all over the world.
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संबंधित प्रश्न
Give the percentage of water in the following:
Watermelon
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.
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.
Respiration uses up water from the atmosphere.
Name two gases which are soluble in water
Name two gases which are insoluble in water.
Using R.O. (Reverse Osmosis) plant at home eliminates lot of non-potable water. The best way to effectively use the expelled water of R.O. plant is ______.
The human body requires ______ liters of water per day for proper functioning.
