As the name implies these organic compounds have low boiling point and evaporate quickly into the atmosphere.
5 main volatile organic compounds
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What are the main uses of pesticides?
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Chemicals which prevent, destroy or mitigate any pest (insects, fungus, bacteria, viruses, etc.) are called pesticides. Pesticides are classified on the basis of (i) chemical structure (ii) biological action (iii) class of pests they combat.
5 main sources of arsenic
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In the earth’s crust, the level of arsenic is 2 ppm (the main one being sulphide). The main sources of arsenic pollution are agricultural chemicals. Arsenic can exist in two forms-trivalent and pentavalent. Trivalent arsenic is the most toxic one.
What are the different sources of lead? (Effects)
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Pb exerts its activity through sulphydryl inhibition. Pb has affinity for sulphur and it also reacts with carbonyl and phosphoryl groups. The main biochemical effect of lead is due to its interference with hemesynthesis, leading to hematological damage.
Notes on the Importance of mercury as toxic metal
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Importance of mercury as toxic metal came into limelight after the incidence of Minamata disease in Japan (1953-1960). At Minamata Bay in Japan many people lost their lives, many were permanently crippled and babies born to mothers consuming the mercury contaminated fish were genetically defective.
What is the importance of nutrients for the growth of living things?
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Nutrients are chemicals essential for the growth of living things. For plants there are sixteen elements required for their healthier growth.
5 main categories of water pollutants
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There are large numbers of water pollutants. For our convenience, they have been classified into five different categories: (i) Organic pollutants (ii) Inorganic pollutants (iii) Suspended solids and sediments (iv) Radioactive pollutants and (v) Thermal pollutants Organic pollutants.
What are the devices used for Controlling particulate/flue gas emissions?
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The most effective method of controlling air pollution is definitely to prevent the formation of air pollutants or to reduce their emission at the source itself. This can be achieved by using pure grade materials, modifying the process of formation, as well as the technologies.
What are the different types of plume classified on the basis of ELR and ALR?
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The dispersion of emitted gases from the source of their production is known as plume and the source is known as stack.
3 important causes of temperature inversion
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During the day, the sun heats the earth and air near it. At night, the ground and the air near it cool faster than that high up, creating an inversion. This is more prominent in winter.
4 adverse effects of acid rain our environment
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Many aquatic species disappear due to the acidification of lakes.
Free Essay for students on ozone layer depletion
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About 90 per cent of the atmospheric ozone is in the stratosphere from 10 to 50 km and is known as ozone layer.
Short notes on global energy balance
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The rate, at which the earth and its atmosphere receive energy from space, is equal to the rate at which energy is being returned to space and is known as ‘global energy balance’.
Essay on greenhouse effects
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We are very familiar with the term ‘Global warming’. What does this mean? What is it’s consequence on life on earth? Which materials are responsible for this? All these will be discussed here.
What is the importance of global temperature model?
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Climate is the average weather of a place as determined by temperature and various meteorological conditions such as precipitation, wind, glaciations and also by the frequency of extreme events such as typhoons, hurricanes, etc. The most important attribute of climate change is however the variations in temperature.