Acid rains are produced by
Excess NO2 and SO2 from burning fossil fuels
Excess production of NH3 by industry and coal gas
Excess release of carbon monoxide by incomplete combustion
Excess formation of CO2 by combustion and animal repiration
Ultraviolet radiations from sunlight cause a reaction which produces
O3
SO2
CO
CH4
Atmosphere of big/metropolitan cities is polluted most by
Automobile exhausts
Pesticide residue
Household residue
Radio-active fall- out
Highest DDT deposition shall occur in
Phytoplankton
Sea Gull/Birds
Crab
Eel
Which gas contributes most to green house effect___
CFC
Freon
CO2
CH4
Disease caused by eating fish found in water contaminated with industrial waste having mercury is
Minamata disease
Bright’s disease
Hashimoto’s disease
Osteosclerosis
Drawback of DDT as pesticide is
It becomes ineffective after some time
It is less effective than others
It is not easily/ rapidly degraded in nature
Its high cost
Sound becomes hazardous noise pollution at level
Above 30 dB
Above 80 dB
Above 100 dB
Above 120 dB
Fish die in water bodies polluted by sewage due to
Pathogens
Clogging of gills by silt
Reduction in oxygen
Foul smell
Which of the following pairs is a sedimentary type of biogeochemical cycle?
Oxygen and nitrogen
Phosphorus and sulphur
Phosphorus and nitrogen
Phosphorus and carbon dioxide
The Taj Mahal is threatened due to the effect of
oxygen
hydrogen
chlorine
sulphur dioxide
Which one is not a pollutant normally?
Hydrocarbons
Carbon dioxide
Carbon monoxide
Sulphur dioxide
When huge amount of sewage is dumped into a river, its B.O.D, will
increase
decrease
sharply decrease
remain unchanged
Green house effect is warming due to
Infra-red rays reaching earth
Moisture layer in atmosphere
Increase in temperature due to increase in carbon dioxide concentration of atmosphere
Ozone layer of atmosphere
Major aerosol pollutant in jet plane emission is
Sulphur dioxide
Carbon monoxide
Methane
Fluorocarbon
Gas released during Bhopal tragedy was
Methyl isocyanate
Potassium isothiocyanate
Sodium isothiocyanate
Ethyl isothiocyanate
Domestic waste constitutes
Nonbiodegradable pollution
Biodegradable pollution
Effluents
Air pollution
Acid rain is due to increase in atmospheric concentration of
Ozone and dust
CO2 and CO
SO3 and CO
SO2 and NO2
Most hazardous metal pollutant of automobile exhausts is
Mercury
Cadmium
Lead
Copper
Ultraviolent radiations from sunlight causes a reaction that produces
Fluorides
Carbon monoxide
Sulphur dioxide
Ozone
In Minamata Bay Japan, the animals which remained free from Minamata disease , are
pigs
rabbits
dogs
cats
Sewage drained into water bodies kill fishes because
excessive carbon dioxide is added to water
it gives off a bad smell
it removes off a bad smell
it increase competition with fishes for dissolved oxygen