AIR AND WATER
4 a. Name the gases present in air.
Ans. The gases present in air Nitrogen,Oxygen, Carbon dioxide and Water vapors .
b.How does atmosphere help us?
Ans. Atmosphere helps in following ways: It protects the earth from becoming too hot by stopping the harmful sun’s rays.It also helps in escaping the heat from the earth.
d.How are soluble impurities removed from water?
Ans. Soluble impurities are removed by the processes evaporation and distillation.
e.How water is made safe for drinking before being supplied to our house?
Ans. Water is treated by sedimentation, filtration, and chlorination before it reaches our house.
4 a. Name the gases present in air.
Ans. The gases present in air Nitrogen,Oxygen, Carbon dioxide and Water vapors .
b.How does atmosphere help us?
Ans. Atmosphere helps in following ways: It protects the earth from becoming too hot by stopping the harmful sun’s rays.It also helps in escaping the heat from the earth.
c.How is air pressure used in our daily lives?
Ans.We use air pressure to drink juice from a straw, filling the ink inside a pen and also to Tyre to support vehicles and aircraft.d.How are soluble impurities removed from water?
Ans. Soluble impurities are removed by the processes evaporation and distillation.
e.How water is made safe for drinking before being supplied to our house?
Ans. Water is treated by sedimentation, filtration, and chlorination before it reaches our house.
Dear students do Questions: 1, 2, and 3.
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