The heaviest of the particle emissions are:
Alpha particles
Beta particles
Neutrons
None of these
_______ percent of oxygen present in air.
50
20
21
11
_____________is the pollutant of motor vehicle exhaust.
Carbon monoxide
Carbondioxide
Chloroflurocarbon
Air pollution causes
Global warming
Respiratory diseases
Soil erosion
Highest percentage of air consists of
Oxygen
Carbon dioxide
Nitrogen
Argon
Soil erosion is mainly caused due to
Wind
Cutting of trees
Excessive use of fertilizers
Poor irrigation
Eutrophication leads to death of fish due to
Decreased O2 concentration
Increased algal growth
Increased CO2 concentration
Increased O2 concentration
____________is defined as the release of substances and energy (in excess of permissible limit) as waste products into the environment.
Pollution
Prevention
Preservation
___________causes several diseases in man and animal.
Soil pollution
Water pollution
Radiation pollution
A device used in the chimney to remove solid particles from the gases released into the air
Stainer
Electrostatic precipitator
Cloth
Converter