Category: Air Pollution

Private Cost: Private cost refers to the cost of production incurred and provided for by an individual firm engaged in the production of a commodity. It is found out to get private profits.This cost has nothing to do with the society. It includes both explicit as well as implicit cost. A firm is interested in minimising private cost. Image Source : sustainablejill.com Social Cost: ADVERTISEMENTS: Social cost refers to the cost of producing a commodity to the society as a whole. It takes into consideration all those costs, which are borne by the society directly or indirectly. Social cost is not borne by the firm. It is rather passed on to persons not involved in the activity in the direct way. Social cost is a much broader concept.It is found…

1. Which of the following is an air pollutant?(a) Nitrogen(b) Carbon dioxide ADVERTISEMENTS: (c) Carbon monooxide(d) Oxygen Image Source: abctechnolab.com2. Which of the following is a secondary air pollutant? ADVERTISEMENTS: (a) Ozone(b) Carbon dioxide(c) Carbon monooxide(d) Sulphur dioxide ADVERTISEMENTS: 3. The environmental lapse rate is found to be:(a) – 6.5°C/km(b) 8.6°C/km(c) 6.5°C/km(d) 5.6°C/km 4. During Inversion:(a) Temperature increases with altitude(b) Temperature decreases with altitude(c) Temperature remains constant(d) None of the above5. Among the following, the only secondary pollutant is: (a) Sulphur tetraoxide(b) Sulphur dioxide(c) Ozone(d) Sulphur tetraoxide6. Which of the following groups of plants can be used as indicators of SO pollution of air?(a) Epiphytic lichens(b) Ferns(c) Liver worts(d) Horn worts7. Which of the following on inhalation dissolved in the blood hemoglobin more rapidly than oxygen?(a) Sulphur dioxide(b) Carbon mono-oxide(c)…

“What is pollution? Dictionary defines that the process of making Air, Water, Soil, etc. dangerously dirty and not suitable for use! Pollution plays havoc in man’s life. Pollution can be classified into many groups.Air Pollution:When fresh air gets mixed up with any one of these, like smoke emitted by vehicles, Industrial smoke, Fires, Dust storm, explosions, burning of waste, bombs and crackers, it kills the oxygen content in the air and become dangerous to inhale. It amounts to sickness like Lung cancer, Asthma and many others. ADVERTISEMENTS: At times, it may be fatal too. One may recall the leakage in the poisonous gas cylinder in the Union Carbide company in Bhopal that killed some hundreds of people and the cattle.Similarly, the twin atomic bombs dropped on Hiroshima and Nagasaki by…

Lightning is a discharge of static electricity in the atmosphere, which causes a bright flash of light. When lighting goes through the air, it heats the air. This heating causes the air to expand and contract. This causes the sound called thunder.Lightning is caused by a buildup of negative ions in the atmosphere which discharges into the ground causing the negative ions to go with the positive ions in the ground. Static electricity is negatively and positively charged atoms. A static charge on the other hand is an individual atom with a negative Positive charge.There are three types of charges negative positive and neutral. Negative and positive ions attract. But the negatives repel each other, just like two positives will. Image Source : i.ytimg.com ADVERTISEMENTS: Neutrally charged ions can attract…

Sample essay on Air Pollution- A Burning Problem. God created Nature and his very purpose must have been for Nature to supplement the needs of humanity. But He would not have expected the limits of destruction by this most intelligent, of His creations to reach the native, which is has gone on doing over the years, to the extent that it is now becoming a curse for mankind.Air pollution, water pollution, soil pollution and now even pollution of the atmosphere, the latter is now clearly seen in satellite pictures and has led to depletion of the Ozone cover. It has left a gaping hole in the Ozone layer reducing the earth’s ability to protect life from deadly ultraviolet radiation.Initially, air pollution started off with the burning of wood for warmth,…

14 Questions with Answers and Explanations on “Environmental Issues” for Biology Students: Image Source: quotationof.comQ. 1. What are the effects on our body of particulates of size 2.5 micrometers? Ans. These particles are deep inhaled into lungs and cause— ADVERTISEMENTS: (i) breathing and respiratory problems.(ii) irritation, inflammation, damage to lungs.(iii) premature death. ADVERTISEMENTS: Q. 2. (i) Why are auto vehicles filled with catalytic converters? (ii) What do these, devices have as catalyst? (iii) How are these converters useful? Ans. (i) Catalytic converters are devices fitted to auto vehicles to reduce atmospheric pollution, due to burning of petrol/diesel. ADVERTISEMENTS: (ii) Rhodium, platinum-palladium are the catalyst fitted to the converters.(iii) These catalyst converters, convert the unburnt hydrocarbons into C02, H00, and CO and nitric oxide are converted into CO2,, N2.Q. 3. Mention…

Essay on Important Methods of Detection and Measurement of Air Pollution !Air pollution is usually measured by sampling of air by thermal and by electrostatic precipitation, Sonkin impactor and electrostatic dust collectors. image source: d.fastcompany.net ADVERTISEMENTS: Table 251. Common air pollutants, their sources and pathological effects on man (after Southwick, 1976):PollutantsWhere they come from (source)Pathological effect on man 1. AldehydesThermal decomposition of fats, oil, or glycerol.Irritate nasal and respiratory tracts. 2. AmmoniasChemical processes—dye- making; explosives; lac­quer; fertilizer.Inflame upper respiratory passages. 3. ArsinesProcesses involving metals or acids containing arsenic soldering.Break down red cells in blood, damage kidneys; cause jaundice. 4. Carbon monoxidesGasoline motor exhausts; burning of coal.Reduce oxygen-carrying capa­city of blood. 5. ChlorinesBleaching cotton and flour; many other chemical pro­cesses.Attack entire respiratory tract and mucous membranes of eyes; cause pulmonary edema:…

Here is your Short Paragraph on the Air Pollution specially written for School and College Students in Hindi Language:

For a long time now many people have different views about smoking in public places. Smokers feel it is their right to smoke where and when they want. On the other hand non-smokers feel smokers violate their rights and endanger there life. Smoking causes heart disease, lung cancer and other serious illnesses. Cigarette smoking is the number one cause of lung cancer.A substantial number of lung cancers that occur in non-smokers can be attributed to involuntary smoking. While some people feel that smoking in public places should remain since it is their right, smoking in public places should be banned because second-hand smoke will endanger non-smokers health and it pollutes the environment.Smokers feel they have had the right to smoke in a public place for so long that it should…