Question

1. How does human technology contribute to environmental chemical pollution?

Please list examples.

Answer 1

Answer :- The main environmental chemical pollutants are :-

The Substances that cause the most concern: , Carbon Dioxide, Carbon Monoxide, Unburned Hydrocarbons, Nitrogen Oxides, Ozone, Sulfur Dioxide, Chlorofluorocarbons and Lead and Heavy metals.

1. Carbon Dioxide - During production of electricity , a lot of fossil fuels are used which thus emitting carbon dioxide which is very harmful to our environment.

2. Carbon monoxide - Produced by incomplete combustion of plastic bottles, heating boilers, gas-stoves, gas-powered water heaters, etc these are sources of carbon monoxide.

3. Unburned hydrocarbons:- In automobile engine, when petroleum products burn then this unburned hydrocarbons emits into air and pollutes the environment.

4. Nitrogen oxides - these are produced by automobiles, cement kilns, turbines, industrial boilers, construction equipments etc

5. Ozone - Ozone gets depleting day by day because of the chloro-flouro carbons, refrigerants, Propellants, foam-blowing agents, etc.

6. Sulfur dioxide - major source of sulphur dioxide is burning of fossil fuels in the industrial units and power plants .

7. Chlorofluorocarbons - CFCs major sources are fire suppression systems of aircrafts, refrigerants, aerosols etc which directly depletes the ozone layer.