Chemistry
Answer
Four steps to be taken to control air pollution are given below:
- Growing more trees and plants in big cities and towns. Trees clean the atmosphere by using carbon dioxide and releasing oxygen. Trees also help in bringing more rains that make the atmosphere free of pollutants.
- Factories and power houses should be provided with tall chimneys so that smoke and gases go high up into the air.
- Unleaded petrol should be used in vehicles. Vehicles should be regularly checked for pollution control. Nowadays, CNG (Compressed Natural Gas) is being used as a fuel in all the public transport vehicles to reduce pollution.
- Using smokeless sources of energy, like solar energy and electrical energy in place of the conventional fossil fuels. Smokeless chulhas use biogas and solar energy.
Related Questions
What is meant by ozone depletion?
Mention five causes of air pollution.
Study the diagram and name the processes A, B and C.
In an experiment done with a burning candle, the apparatus was set up as shown below. Initially, the candle burns but after sometime it gets extinguished.
Look at the diagram and answer the questions given below.
(a) Label A and B.
(b) Why does the candle burn in (I) but gets extinguished in (II) ?
(c) Why does the water level rise after sometime ?
(d) What conclusion is drawn by the experiment show above ?