{"id":25973,"date":"2022-05-19T18:30:20","date_gmt":"2022-05-19T13:00:20","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=25973"},"modified":"2023-11-10T11:12:12","modified_gmt":"2023-11-10T05:42:12","slug":"icse-solutions-for-class-9-geography-sources-of-pollution","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/icse-solutions-for-class-9-geography-sources-of-pollution\/","title":{"rendered":"ICSE Solutions for Class 9 Geography – Sources of Pollution"},"content":{"rendered":"
ICSE Solutions<\/a>Selina ICSE Solutions<\/a>ML Aggarwal Solutions<\/a><\/p>\n Exercises<\/strong><\/span><\/p>\n I. Short Answer Questions<\/strong><\/p>\n Question 1.<\/strong><\/span> Sources :<\/strong><\/p>\n Question 2.<\/strong><\/span> Question 3.<\/strong><\/span> Question 4.<\/strong><\/span> Question 5.<\/strong><\/span> Question 6.<\/strong><\/span> Question 7.<\/strong><\/span> Question 8.<\/strong><\/span> Question 9.<\/strong><\/span> Question 10.<\/strong><\/span> Question 11.<\/strong><\/span> Question 12.<\/strong><\/span> Question 13.<\/strong><\/span> Question 14.<\/strong><\/span> Question 15.<\/strong><\/span> II. Long Answer Questions :<\/strong><\/p>\n Question 1.<\/strong><\/span> Answer:<\/strong><\/span><\/p>\n Question 2.<\/strong><\/span> Question 3.<\/strong><\/span> Question 4.<\/strong><\/span> (a)<\/strong> Pesticides Answer:<\/strong><\/span><\/p>\n (a)<\/strong> Pesticide waste mixed with the soil make it harmful for natural composition of soil and natural plants which cannot be taken in food material due to toxic material and the soil is contaminated for a long time. Question 5.<\/strong><\/span> Question 6.<\/strong><\/span> ICSE Solutions for Class 9 Geography – Sources of Pollution ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions Exercises I. Short Answer Questions Question 1. Name any three air pollutants and the sources of each of them. Answer: Pollutant : Carbon Monoxide (CO) : Nitrogen Oxides (NOx) : Sulphur Oxides (SOx) : Sources : Gasoline fuel, motor … Read more<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[3034],"tags":[20255,20254,20257,20256,20260,20263,20262,20261,20259,20258,6788,20253,20264],"yoast_head":"\n
\nName any three air pollutants and the sources of each of them.
\nAnswer:<\/strong><\/span>
\nPollutant :<\/strong><\/p>\n\n
\n
\nWhat are natural sources of air pollution ?
\nAnswer:<\/strong><\/span>
\nNatural sources are volcanic eruptions, sand, dust, forest fires etc.<\/p>\n
\nName one industry which pollutes the atmosphere with gaseous as well as with particulate matter.
\nAnswer:<\/strong><\/span>
\nAutomobile industry.<\/p>\n
\nWhat is known as smog ? What harm is done by smog especially in winter ?
\nAnswer:<\/strong><\/span>
\nSmog means smoke + fog. In winter season smog is responsible for many accidents due to the obstacle in visibility.<\/p>\n
\nName three gases emitted during burning of garbage.
\nAnswer:<\/strong><\/span>
\nThese are Carbon dioxide, Sulphur dioxide, Nitrogen oxides.<\/p>\n
\nMention any two sources of water pollution.
\nAnswer:<\/strong><\/span>
\nTwo sources of water pollution are :<\/strong><\/p>\n\n
\nName two heavy metals from industries that pollute water.
\nAnswer:<\/strong><\/span>
\nHeavy metals are Lead and Mercury.<\/p>\n
\nMention any four sources of soil pollution.
\nAnswer:<\/strong><\/span>
\nThese are industrial wastes, domestic waste, chemical fertilizers and pesticides.<\/p>\n
\nWhy are radioactive pollutants very dangerous ?
\nAnswer:<\/strong><\/span>
\nThe emission of radioactive minerals Uranium 235 Plutonium 239, make the whole surroundings radioactive after fission and carried away by wind to long distances. These are dangerous to health, as these remain as it is for a long time.<\/p>\n
\nWhat kind of solid and liquid pollutants does the offshore drilling produce ?
\nAnswer:<\/strong><\/span>
\nDrilling produces dust, stones etc and crude oil spills pollute largely the oceanic water and disturb marine life.<\/p>\n
\nWhat are primary pollutants ?
\nAnswer:<\/strong><\/span>
\nThe pollutants that are directly emitted from the sources and are found in the atmosphere in the form in which they are emitted are known as primary pollutants, e.g., ash, radioactive compounds, oxides of sulphur and nitrogen etc.<\/p>\n
\nWith an example, state what are secondary pollutants?
\nAnswer:<\/strong><\/span>
\nThe pollutants that are formed in the atmosphere by chemical interactions between primary pollutants and atmospheric constituents are known as secondary pollutants. Examples of secondary pollutants are Sulphur trioxide, Ozone, Peroxyacetyl Nitrate (PAN), Ketones etc.<\/p>\n
\nWhat is the connection between urbanisation and air pollution ?
\nAnswer:<\/strong><\/span>
\nThe major connection between urbanisation and air pollution are automobiles, industries, burning of garbage and brick kilns. These sources release pollutants such as oxides of carbon, oxides of sulphur, oxides of nitrogen, and hydrocarbons, ozone, chlorofluoromethanes, etc.<\/p>\n
\nHow much are the automobiles responsible for air pollution ?
\nAnswer:<\/strong><\/span>
\nAutomobiles are mainly responsible for 80% air pollution, emitting Carbon monoxide, Hydrocarbons, Nitrogen monoxide etc.<\/p>\n
\nHow are brick kilns a source of gases and particulate matter that cause air pollution ?
\nAnswer:<\/strong><\/span>
\nBrick kilns produce huge amount of Carbon oxides, smoke and dust etc.<\/p>\n
\nWith reference to noise pollution, answer the following:<\/strong><\/p>\n\n
\n
\nAir pollution is the contamination of air by pollutants. In this context answer the following :
\n(i) How does the use of automobiles cause air pollution ?<\/strong>
\nAnswer:<\/strong><\/span>
\nAutomobiles produce large amount of CO, hydrocarbons, oxides and suspended particulate matter and cause air pollution.
\n(ii) Write short notes on industrial air pollution.
\nAnswer:<\/span><\/strong>
\nIndustrial pollution cannot be avoided, as without it development is not possible. So it is an unavoidable problem faced by urban industrial areas, because harmful gases, garbage etc. is emitted by industrial activities, e.g. Industries release CO, oxides of Sulphur and Nitrogen, smoke, dust etc. to the air.
\n(iii) What special kind of air pollution do the brick kilns produce?
\nAnswer:<\/span><\/strong>
\nDust and smoke are the main elements produced by the brick kilns to pollute the air.<\/p>\n
\nWith reference to the sources of water pollutants answer the following questions:
\n(i) Why is it harmful to dispose of household detergents in water bodies ?<\/strong>
\nAnswer:<\/strong><\/span>
\nDetergents contain some phosphates which are helpful to 1 produce algae and aquatic weeds which pollute the water.
\n(ii) In what way does the industrial waste pollute water?
\n<\/strong>Answer:<\/strong><\/span>
\nMany harmful wastes are produced by the industries which ; pollute water, e.g. Kanpur leather works continuously are polluting water of Ganga river creating a big problem. Industrial wastes mixed with water make it poisonous and unhygenic and may result in various diseases.
\n(iii) How do the radioactive wastes get into the water bodies?
\n<\/strong>Answer:<\/strong><\/span>
\nWastes produced by nuclear power stations nuclear weapons \/ testing, research laboratories, and hospitals, are the main radioactive wastes which pollute the water bodies.
\n(iv) How is the thermal pollution of water caused ? What are its effects ?
\n<\/strong>Answer:<\/strong><\/span>
\nThe thermal power plants located near the rivers use water for cooling purposes. They release the recycled hot water into the rivers leading to thermal pollution. The hot water makes the temperature of aquatic environment rise which endangers the aquatic ecosystem.<\/p>\n
\nWrite short notes on soil pollution by<\/p>\n
\n(b)<\/strong> Biomedical waste.<\/p>\n
\n(b)<\/strong> Biomedical waste Hospital wastes contain organic materials, chemicals, metal, needles, plastics contaminate the soil and make it unfit for growth of plants etc. Third world countries are facing this problem deeply.<\/p>\n
\nWhat are the sources of radioactive pollution ? Describe each of them.
\nAnswer:<\/strong><\/span>
\nThese are natural sources from cosmic rays, man-made sources by use of\u00a0 X-rays, nuclear weapons, Atomic reactors and fuel, radioactive isotopes in research laboratories are the main reasons to pollute rivers, streams and lakes etc. through sewers.<\/p>\n
\nWhat are the man-made sources of air pollution ?
\nAnswer:<\/strong><\/span>
\nMan-made sources are human activities, e.g., industries, factories, urban settlement, aircraft, nuclear experiments, automobiles, agricultural and power plants etc. are the sources of air pollution.<\/p>\n","protected":false},"excerpt":{"rendered":"