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Biology Pollution Notes (Jamnabai Narsee School, Mumbai)

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Jamnabai Narsee School (JNS), Mumbai

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CLASS X BIOLOGY POLLUTION Q1. Define pollution. The addition of constituents into air, water or land which deteriorates the natural quality of that environment and adversely affects the organisms living in it is called pollution. Q2. Define pollutant. A pollutant is that substance which when added to an environment causes pollution. Q3. Name the five major types of pollution. The five major types of pollution are:1. Air pollution 2. Water pollution 3. Soil pollution 4. Radiation 5. Noise AIR POLLUTION Q4. Define air pollution. The addition of harmful gases such as nitrogen di oxide, sulphur di oxide etc to the air, such that the quality of the atmospheric air deteriorates, which in turn affects the living organisms is called air pollution. Q5. Name and differentiate the two types of air pollution. The two types of air pollution are 1. Gaseous pollution 2. Particulate pollution Gaseous pollution: is that type of air pollution caused as a result of harmful gases such as sulphur di oxide, carbon monoxide being emitted into the atmospheric air from different sources. Particulate pollution: is air pollution caused due to the addition of minute particles into the atmospheric air as a result of vehicular combustion, mining, drilling etc. Q6. Name the different sources of air pollution. The different sources of air pollution are:1. Vehicles/automobiles: smoke emitted from vehicles produce particles of soot and hydrocarbons as well as harmful gases such as carbon monoxide, carbon di oxide, sulphur di oxide etc. Speeding vehicles also raise dust particles. Friction caused due to the rubber tyres against road surface releases fine rubber particles into the air. 1

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