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Which of the following water pollutants encourage the formation of algae
Photochemical smog is related to pollution if
All of the above.
BOD refers to
Biological oxygen demand of polluted water
Total oxygen demand of biosphere
Biological oxygen deficit
The gas responsible for causing Bhopal tragedy was
Which of the following reacts with haemoglobin of blood and produce toxic effect
The chemical species released by chloroflurocarbons which are harmful to ozone is
Chlorine free radicals
Nitrogen dioxide molecules
Water pollution is mainly due to which of the following
Minamata disease is because of pollution of
Organic waste going into drinking water
Oil spill in water
Industrial waste containing mercury into fishing water
Arsenic goning into the atmosphere.
Addition of phosphate and nitrate/fertilizers into water leads to
Increased growth of algae
Reduced of algae growth
Increased growth of decomposers
Burning of fossil fuels is the main source of which of the following pollutant
Which of the following is major sink for carbon monoxide
Salts dissolved in ocean water.
Carbon dioxide content in atmosphere is
Air pollution is not caused by
Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due to
formation of free radicals in the blood.
preventing haemoglobin to form oxyhaemoglobin
Break down of haemoglobin
its combination with oxygen to form carbon dioxide
Water is often treated with chlorine to
Increase oxygen content
Remove insoluble impurities.
Which of the following is not a chemical pollutant
The pollutants released by jet aeroplanes inthe atomsphere as fluorocarbons are called
Atmosphere of metropolitan cities is mostly polluted by
Radio-active fall out.
The presence of which of the following in drinking water is responsible for mottling of teeth
Photochemical smog consists of excessive amount of X in addition to aldehydes, ketones, PANetc.
Cyclone collector is used for minimising
Which of the following substance is not present in acid rain
Ozone hole is maximum spread over
Which of the following is a mode of controlling pollution in big cities
Cleanliness and less use of insecticides
Broder roads and shifting of factories out of the residential areas
All the above.
Proper disposal of organic wastes, sewage and industrial effluents
As it passes into food chain, the concentration of DDT
Green chemistry refers to
Chemistry of plants
Chemistry of green pigments
Development of chemical products and processes less harmful to humans
Chemistry of geen house effect.
pH of acid rain is around
5-6 or below
Ozone layer of stratosphere requires protection from indiscriminate use of
Atomic explosions and industrial wastes
Aerosols and high flying jets
Fungicides, insecticides, bactericides and medicines
Spraying of DDT produces pollution of
Air and soil
air and water
Air, water and soil.
Chief source of water and soil pollution is
All of the above.
Thermal power plant
Mining of ores
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