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प्रश्न
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.
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उत्तर
A very large number of our people defecate in the open. It may cause water pollution and soil pollution. Both the surface water and ground water get polluted. Ground is the source for wells, tube-wells and hand pumps. Thus it becomes the most common route for water borne diseases like cholera, dysentery, etc.
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संबंधित प्रश्न
Cleaning of water is a process of removing ______.
Name the four main sources of water.
Water has ...................... density and .................. volume at 4°C.
Give one word for the following statement:
The gaseous form of water found in air .
Give one word for the following statement:
A mixture of common salt and ice .
What is the smallest particle of water ? Describe it’s structure.
How are natural springs of water formed ?
How is rain produced?
How do fishes and aquatic animals survive when the pond gets covered with thick ice?
What is the composition of water? In what volume its elements combine?
Fill in the blank:
The type of water softened by addition of washing soda is ______.
Give a reason for the following:
A crusty ‘boiler scale’ is formed in boilers, when hard water is used.
Name or state the following:
A deliquescent salt of a trivalent metal.
Differentiate between the following:
Natural water and treated water
Condensation results in the formation of dew on grass.
Look at the map of Tamilnadu showing annual rainfall and answer the questions given below
- Identify the districts that get only low annual rainfall in Tamilnadu.
- Identify the districts that get a medium annual rainfall in Tamilnadu.
- State the districts that enjoy high annual rainfall in Tamilnadu.
Nitrogen is used for the treatment of drinking water.
Why should we not throw cooking oil and fats down the drain?
Write any two activities which require more than a bucket of water.
