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Which of the following is not a chemical pollutant
Ozone depletion in stratosphere will result in
Increased incidence of skin cancer
None of the above.
From among the followings, the major cause of pollution of air big cities
Which among the following is biodegradable pollutant
Which one of the following is a source of energy but does not cause pollution
Nuclear power plant
Carbon dioxide content in atmosphere is
Water pollution is due to
Sewage and other wastes
All the above.
pH of acid rain is around
5-6 or below
Which of the following water pollutants encourage the formation of algae
Fluorosis, the bone disease, is caused by the presence of
pesticides in water
carbon monoxide in air
fluorides in water
sulphru dioxide in air.
Photochemical smog is generally formed
around mid day in summer months
When intensity of solar radiations is very low
When concentration of particulate matter is very low.
in early hours of winters
Burning of fossil fuels is the main source of which of the following pollutant
Fish die in water bodies polluted by sewage due to
Reduction in dissolved oxygen
Clogging of gills by silt
Air pollution is not caused by
Whcih of the following is biodegradable pollutant
Cyclone collector is used for minimising
Spraying of DDT produces pollution of
Air, water and soil.
Air and soil
air and water
Which of the following is major sink for carbon monoxide
Salts dissolved in ocean water.
Photochemical smog is related to pollution if
All of the above.
Atmosphere of metropolitan cities is mostly polluted by
Radio-active fall out.
Water is often treated with chlorine to
Increase oxygen content
Remove insoluble impurities.
Phosphate pollution is caused by
Phosphate rocks and sewage
Weathering of phosphate roks only
Carbon dioxide dissolved in water
Sewage and agricultural fertilizers.
Environmental pollution affects
Both biotic and abiotic components of environmint.
The gas responsible for causing Bhopal tragedy was
The chemical species released by chloroflurocarbons which are harmful to ozone is
Nitrogen dioxide molecules
Chlorine free radicals
The presence of which of the following in drinking water is responsible for mottling of teeth
Ozone layer of stratosphere requires protection from indiscriminate use of
Fungicides, insecticides, bactericides and medicines
Atomic explosions and industrial wastes
Aerosols and high flying jets
Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due to
preventing haemoglobin to form oxyhaemoglobin
formation of free radicals in the blood.
its combination with oxygen to form carbon dioxide
Break down of haemoglobin
Which of the following substance is not present in acid rain
Which one is not a pollutant in the true sense of the word