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level: aiims and disha questions

Questions and Answers List

level questions: aiims and disha questions

Question	Answer
which metal pollution causes sterility in humans	manganese
what is dissolved in water to make bordeaux mixture	copper sulphate
photochemical smog formed in congested metropolitan cities mainly consists of	hydrocarbons, SO2 and CO2
drinking of mineral water with very low level of pesticides for long periods of time may	lead to accumulation of pesticides residues in body fat
minimata disease is pollution related disease it results from	release of industrial waste containing mercury in fishing water
nitrogen oxides, produced from the emission of automobiles and power plants, are the souce of fine air borne particles which lead to	photochemical smog
formation of non functional methaemoglobin caues blue baby syndrome. this is due to	excess of nitrates in drinking water
is DDT biodegradable	no DDT is a non bio degradable pollutant
the two gases making the highest relative contribution to the greenhouse gases are	CO2 and CH4
DDT residues are rapidly passed through food chain causing biomagnification because DDT is	lipo soluble
Euro II norms stipulate that sulphur be controlled at _____ ppm in diesel and _____ppm in petrol	350,150
which organopesticides are fenitrothion	fenitrothion is organophosphate pesticide
these are persistant pesticides which pass into food chain and increase in amount per unit weight of organisms with the rise in trophic level	organochlorine
what is the result of ozone hole	it results in rain failure, increase in radiation, cancer and reduction in crop production
what is double the concentration of what it was 250 years ago	green house gas
what is contamination	presence of harmful organisms causing disease
how much percentage does the ozone layer deplete every year	by 67 percent
acid rain is caused by the increase in the atmospheric concentration of	SO2 and NO2
a scrubber in the exhaust of a chemical industrial plant removes	gases like sulphur dioxide
the air prevention and control of pollution act came into force in	1981
steps taken by the government of india to control air pollution include	compulsory PUC (pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons
in a coal fired power plant electrostatic precipitators are installed to control emission of	SPM
photochemical smog pollution does not contain	carbon dioxide
which of the following is a secondary pollutant	PAN
the CO2 content in the atmospheric air is about	0.034 per cent
the taj mahal is threatened due to the effect of	SO2
major aerosol pollutant in jet plane emission is	florocarbons
secondary sewage treatment is mainly a	biological process
a lake near a village suffered heavy mortality of fishes within a few days. what could be the reason	phytoplanktons populations in the lake declined initially thereby greatly reducing photosynthesis
list some bioindicator of water pollution	blood worms, sewage fungus and sludge worms
what are some chemicals used for disinfection of drinking water	chlorine, ozone and chloroamine
more than 70 per cent of world's fresh water is contained in	polar ice
in 1984, bhopal gas tragedy took place because methyl isocyanate reacted with	water
what plant is absent in polluted water	hydrilla
DDT causes egg shell thinning in birds because it inhibits	calcium ATPase
warm ocean surge of the peru current reoccuring every 5-8 years or so in the east pacific of south america is widely known as	El Nino
phosphate pollution is caused by	sewage and agricultural fertilizers
in minamata bay japan, the animals which remained free from minamata disease are	rabbits
rachel carson's famous book silent spring is related to	pesticide pollution
lead conc. in blood is considered alarming if it is	30 mug/100ml
recently Govt. of india has allowed mixing of alcohol in petrol. what is the amount of alcohol permitted for mixing in petrol	5 per cent