Process of waste water treatment is known as
Sullage
Garbage treatment
drainage treatment
Sewage treatment
Air contains ___ % of oxygen.
20.9%
0. 3%
78%
20%
Prevention and control of pollution Act for water established in ___________ year.
1974
1981
1986
1980
_______ decrease the productivity of the soil.
Grass
Garbage
Factory waste
Fertilizers
CFC destroys ______ layer of earth.
Ozone
Troposphere
Stratosphere
Thermosphere
Prevention and control of pollution Act for Air was established in _________ year.
1982
Industrialization and _______ increases global warming.
rural area
urbanization
pollution
farming
The colourless gas found in the upper atmosphere.
oxygen
nitrogen
ozone
carbon dioxide
Among the following which is the basic need of human being.
Transport
Food
Soil
Rain
Most of the environmental problems are due to increase of
Water
Animals
Population
