Advertisements
Advertisements
प्रश्न
Dissolve two spoons of common salt in half a cup of water. Now if you want to get the salt back, what will you do?
Advertisements
उत्तर
We can get back the salt we dissolved in water by two methods:
- Either heating the salted water in a pan on a burner.
- Alternatively, keep the salted water pan in the sun.
In both ways, the water will evaporate in the form of water vapours and the salt will have to remain back in the pan.
APPEARS IN
संबंधित प्रश्न
What are the main causes of water pollution ? How can it be controlled ?
Give reason of Icebergs float on ocean water.
What do you mean by water pollution ?
Explain why:
Table salts become sticky on exposure to humid air during the rainy season.
Complete the statement by filling the blank with the correct word from the option.
The ratio of hydrogen & oxygen in water is ____.
What is meant by the term ‘oil spill’?
State the importance of water for all general uses.
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.
In which of the following activities will you use minimum amount of water?
