Possibly one of the scariest environmental effects of coal mining is the threat of acid rain. The high acidity of AMD remains in the water supply even through evaporation and condensation, which enables it to stay in the atmosphere and eventually return in the form of acid rain, thus perpetuating the cycle of pollution.
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20.03.20161. The goal to lower coal, oil, and gas use faces a fundamental economics problem: less fossil fuel usage lower their prices, thereby increasing the
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21.10.2013Write short explanatory note on Secondary cities in the context of urbanization in developing world. Explain. (250 words/CSM 2013) ANSWERS. " Extinction of species is an inherent natural ecological process that operates at much larger scale while man-induced extinction is a myth".
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12.11.20181- Crushing. The first step in kimberlite ore processing is crushing. This process reduces large run-of-mine lumps into smaller pieces, making them easier to handle, and releases or liberates the diamonds to be recovered in subsequent steps. Crushing is done in stages to "gently" free the diamonds from the kimberlite rock and produce a
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There are four major types (or "ranks") of coal. Rank refers to steps in a slow, natural process called "coalification," during which buried plant matter changes into an ever denser, drier, more carbon-rich, and harder material. The four ranks are: Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high
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10.11.2020A. Answer the following questions in short: 1. List conditions under which combustion can take place. 2. Explain how the use of CNG in automobiles has reduced pollution in our cities. 3. Compare LPG and wood as fuels. 4. Give reasons: (a) Water is not used to control fires involving electrical equipment. (b) LPG is a better domestic fuel than wood. (c) Paper by
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coal mining, extraction of coal deposits from the surface of Earth and from underground. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries, and the industrial growth of that era in turn supported the large-scale exploitation of
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04.10.2020Explain the process coal formation? Get the answers you need, now! 8448614467robin 8448614467robin 04.10.2020 Biology Secondary School answered Explain the process coal formation? 2 See answers Advertisement Advertisement
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31.10.2021Explain the process of the formation of petroleum. Answer: Very Short Answer Type Questions. Question 1. Name some natural materials. Answer: Air, water, soil, forests, minerals etc. Answer: Coal on heating in the absence of air gives coal gas, coal tar, and coke.
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Carbon sequestration is the process of capturing and storing atmospheric carbon dioxide. It is one method of reducing the amount of carbon dioxide in the atmosphere with the goal of reducing global climate change. The USGS is conducting assessments on two major types of carbon sequestration: geologic and biologic. FAQ.
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Coal beneficiation is a process by which the quality of raw coal is improved by either reducing the extraneous matter that gets extracted along with the mined coal or reducing the associated ash or both. Two basic processes of beneficiation: – Dry-deshaling: Non-coal or shaly-coal is removed without using any liquid media. Read More
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Photosynthesis is the process by which plants convert carbon dioxide and water to carbohydrates (starches and sugars). This process is the source of life on Earth. Carbon also occurs in coal, oil, and natural gas. These materials are often known as fossil fuels.
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04.10.2019Coal and petroleum are formed from the dead remains of living organisms that is why they are called fossils fuels. Question 5. Give two characteristics of coal. Answer: Coal is hard and is of black in colour. Question 6. Define destructive distillation. Name the residue formed by destructive distillation of coal.
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27.05.2015List of Disadvantages of Coal. 1. Environmental impact. Burning coal may produce useful by-products, but it can also emit harmful wastes, such as carbon dioxide, sulfuric acid, arsenic, ash, nitrogen oxide and sulfur dioxide. Emissions of CO2 from coal burning also accounts for the additional 65% of carbon dioxide in the atmosphere, increasing
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Coal has a set of disadvantages: coal mining accidents, coal pollution, etc. There are a large number of accidents that take place in coal mines because it is a dangerous and challenging activity involving heavy equipment. Moreover, coal emissions are very harmful to human beings, especially to the lungs. Coal pollution is widespread in areas that lie near coal reserves. When
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Th e process of converting coal into electricity has multiple steps and is similar to the process used to convert oil and natural gas into electricity: 1. A machine called a pulverizer grinds the coal into a fi ne powder. 2. Th e coal powder mixes with hot air, which helps the coal burn more effi ciently, and the mixture moves to the furnace. 3.
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15.02.2022Transporting coal. Coal can be transported from mines and processing plants to consumers in several different ways: Conveyors, trams, and trucks move coal around mines, short distances from mines to consumers close to the mines, or to other modes of long-distance transportation. Trains transport nearly 70% of coal deliveries in the United
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12.02.2021Short answer questions require the students to show their knowledge of IGCSE Business Studies keywords and key concepts through questions like 'Define' and 'Give examples of '. Furthermore, questions that ask the student to 'Outline', and 'Explain', require the candidates to show their technique of application and analysis of the theories learnt. Data response
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Resources not capable of being regenerated by ecological processes. Example: Coal, petroleum. 2. Write the effects of timber extraction on forest tribal people. Large scale timber extraction causes deforestation. It also leads to loss of tribal culture and extinction of tribal people. Timber extraction reduces thickness of the forest.
WhatsApp:+8617329420102Explain the formation of coal. geography. answer comment. 1 Answer. by Get Answers The Boss (181k points) 19 151 495 answered Apr 15, 2021
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17.07.2022Short answer questions Turns out there are as many fossil ant species as there are fossil dinosaur species The following is a review of Gould's Mismeasure of Man, in which Dr The rock must be unique and widespread 2 Index Fossils April 22nd: Correlating Rock Layers Using 2 Index Fossils April 22nd: Correlating Rock Layers Using. Criteria for being a good index fossil
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03.04.201710. Deep Underground Mining is needed when coal seams are found too deep underground. 60% of the world coal production is mined by underground mining method. Bord and Pillar method, Longwall method and short wall method are the most commonly used mining method. 1). Bord and Pillar method:1).
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12.01.2017That's true in the U.S. as well, and has been since 1950. Petroleum is primarily used for transportation: We turn it into gasoline and diesel that fuels cars, trucks, boats, and other equipment. But transportation isn't our top energy need – electricity is. Nearly 40 percent of the energy we use globally goes to making electricity.
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Answer: Coal is a fossil fuel derived from organic matter. We get coal deep inside the Earth's crust in coal mines. When dead plants got buried into the bottom of the soil they slowly converted into coal due high pressure and high temperature. As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonization. Q. What are the
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Short answer question Q:2 explain the formation of coal Get the answers you need, now! 1. Log in. Join now. 1. Log in. Join now. Ask your question. Ask your question. mannasoumik93 mannasoumik93 23.06.2020 Science Primary School +5 pts. Answered Short answer question Q:2 explain the formation of coal 1 See answer mannasoumik93 is waiting for your help. Add
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What is Coal short answer? Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is classified as a nonrenewable energy source because it takes millions of years to form.
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As geological processes apply pressure to dead biotic material over time, under suitable conditions, its metamorphic grade or rank increases successively into: . Peat, a precursor of coal; Lignite, or brown coal, the lowest rank of coal, most harmful to health, used almost exclusively as fuel for electric power generation . Jet, a compact form of lignite, sometimes polished; used as
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Most coals, as they are dug from the ground, have some amount of moisture associated with them. Gentle heating of coal at a temperature slightly above the boiling point of water causes a loss of weight from the sample that is defined as moisture. The moisture content of coals ranges from about 5% to almost 70%. Moisture is an undesirable
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27.01.2011The textbooks explain coal beds as the remains of plants gathered in shallow seas and swamps over geologic time. Pictures of lush landscapes with foreign plants and giant insects are used to make the story more believable. One problem is that we do not see swamps forming coal today. Boggy areas today cannot explain the massive coal deposits seen in the geologic
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The 3 processes that modification one rock to a distinct are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into the opposite rock by passing through one or a lot of these processes. 1. Cooling and crystallization. Deep within the earth, temperatures can get hot enough to create rock.
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provides the answers to the multiple-choice questions. Section I: Multiple-Choice Questions The following are examples of the kinds of multiple-choice questions found on the exam. 1. Which of the following is a characteristic of a country moving from stage 2 to stage 3 of the demographic transition model? (A) Shorter life expectancy
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Coal provides numerous raw materials like benozle, coal tar, sulphate of ammonia, creosote, etc. to chemical industries. Coal is mostly used as a source of energy is most of the industries. Gasification and Liquefaction. Coal can be turned into a synthetic gas which a mixture of carbon monoxide and hydrogen.
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Answer. (d) Fossil fuels are obtained from the remains of living organisms (plants and animals) buried under the earth millions of years ago. Note Coal, petroleum and natural gas are fossil fuels. Question. 7 Coal is formed from the remains of. (a) vegetation only. (b) animals only. (c) both vegetation and animals.
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Class VIII:ScienceResources which do not exhaust and which are available in plenty in nature are known as inexhaustible natural resources
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11.04.20173. Coal offers a rather low capital investment. Many of our fuel and power generation technologies are already designed to use coal. This limits the amount of a capital investment which is required to create a new societal
WhatsApp:+861732942010204.12.2008Thermal-based power plants can produce electricity from coal or other fuel sources. The coal-fired process requires three different steps to turn energy released from burning coal to generating electricity for consumption. Coal fired power plants, while producing power, require a lot of water and produce a lot of pollutants like ash and CO2. Learn how the process works as
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Answer any one question from Q1 and Q2. 1 (a) State and prove the equivalency of Kelvin Planck and Clausius statement. 6 M. 1 (b) Prove: S2-S1=Cvlm (T2/T1)+R ln (V2/V1). 6 M. 1 (c) State the limitations of First law of thermodynamics. How does the second law of thermodynamic overcome these limitations. 4 M.
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Apr 04, 2020Coal is converted into electricity through a complex process that involves steaming, grinding, processing and distribution. The act of transforming coal into electricity is quite a production; coal is first ground to a fine chalky powder and added to combustion chambers of boilers before being burned at higher temperatures to produce hot gas and heat
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Answer (1 of 8): Energy is not created in any Power Plant. Just the conversion of energy takes place. The chemical energy of coal is converted into electrical energy in a coal power plant. Short Answer: Coal is burned ( chemical energy of
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Apr 07, 2022Fracking involves drilling into the earth and directing a high-pressure mixture of water, sand and chemicals at a rock layer in order to release the gas inside. The BBC's David Shukman explains
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