Due to natural process the forests get buried under the soil and got compressed. Due to the change in temperature dead plants got converted into a fossil called coal. ) Fill in the blanks. The slow process of conversion of dead vegetation into coal is called carbonisation. Coal gas is obtained during the processing of coal to get coke.
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UNIT 1: COAL AND PETROLEUM PROCESSING. Coal and Petroleum are defined as follows: Coal is a natural black mineral which is a mixture of free carbon and compounds of carbon containing hydrogen, nitrogen, oxygen and sulfur. Petroleum is a complex mixture of saturated hydrocarbons mainly alkanes (paraffins) and cycloalkanes (naphthenes) with smaller amounts of alkenes and aromatics plus small ...
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Dec 13, 2018. Answer. According to a research the groundwater quality decreases with flowing through abandoned coal mines often has depressed pH levels and elevated hydrogen ...
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As grate moves along the length of the furnace, the coal burns before dropping off at the end as ash. Some degree of skill is required, particularly when setting up the grate, air dampers and baffles, to ensure clean combustion leaving the minimum of unburnt carbon in the ash. The coalfeed hopper runs along the entire coalfeed end of the furnace.
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The coal industry serves a vital role in the nation's economy by producing fuel for more than half of its electricity. Despite the industry's importance, industry financial data for 2005—the strongest year for the coal industry in recent years—shows that it is a relatively small industry with revenues totaling 20 billion to 25 billion and net income between 1 billion and 2 ...
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Engineering Chemistry Questions and Answers Coal 1. This set of Engineering Chemistry Multiple Choice Questions Answers (MCQs) focuses on "Coal 1". 1. What is the time required for the formation of young brown coals? a) 10 7 years. b) 3×10 8 years. c) 3×10 9 years.
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Longwall mining is a highly productive underground mining process in which a panel or block of coal, sometimes 700 feet wide and a mile or more long, is completely extracted. The working are is protected by a moveable, powered roof support system. Longwall accounts for about 48% of total underground coal production. Question 8:
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Coal mines and coalpreparation plants have caused much environmental damage. Surface mining, or strip mining, destroys natural habitats, and one type of surface mining, known as mountaintop removal mining, dramatically and irreparably alters the topography of the area. Surface areas exposed during mining, as well as coal and rock waste (which were often dumped indiscriminately), weather ...
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We get Naphthalene ball from coal tar. Answer. 6. A good fuel must leave very little ash after burning. Answer. 7. Petroleum is found in pure form under the sedimentary rocks. Answer. We hope the given NCERT MCQ Questions for Class 8 Science Chapter 5 Coal and Petroleum with Answers Pdf free download will help you.
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Coal and Petroleum Class 8 Extra Questions Short Answer Type 2. Question 1. Write any two uses of coke. Answer: Two uses of coke are : ... The coal gas is used as a fuel ip the coal processing plant and in many industries situated near the coal processing plants. (ii) Earlier it was used for lighting but nowadays it is used as a source of heat. ...
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Answer: Coal when processed in industry gives coke, coal tar and coal gas. Coke is used in the manufacture of steel and in extraction of many metals. Coal tar is used as starting material for manufacturing various substances such as synthetic dyes, drugs, explosives, perfumes, paints, etc. Coal gas is used as a fuel.
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Coal is a black sedimentary rock. It usually occurs in coal beds found in coal mines. Coal comprises of carbon, hydrogen, oxygen, sulphur, etc. When dead plants and animals decay and convert into peat which in turn is converted into lignite, then subbituminous coal, after that bituminous coal, and lastly anthracite. Hence, coal is a fossil fuel.
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Free download in PDF Mining Engineering General Knowledge Multiple Choice Questions(MCQs) Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
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Practice MCQ Questions for Class 8 Science with Answers on a daily basis and score well in exams. Refer to the Coal and Petroleum Class 8 MCQs Questions with Answers here along with a detailed explanation. Coal and Petroleum Class 8 MCQs Questions with Answers. Choose the correct option.
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Coal is an abundant natural resource that can be used as a source of energy, as a chemical source from which numerous synthetic compounds (, dyes, oils, waxes, pharmaceuticals, and pesticides) can be derived, and in the production of coke for metallurgical is a major source of energy in the production of electrical power using steam generation.
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The volume of waste from processing coal can be substantial; 35 ... Shortterm Energy Outlook Report Coal [4] Energy Information Administration. February 10, 2016. mining and exploration investment declined 35% in 2015 [5] Energy Information Administration. July 7, 2015.
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Coal and Petroleum Class 8 Extra Questions Very Short Answer Questions. Question 1. Name some renewable sources of energy. Water, wind, solar. Question 2. Give some examples of fossil fuels. Coal, petroleum, natural gas. Question 3. Name the elements present in coal.
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Minimising use of water for processing by reusing and recycling it. Smoke can be reduced by using oil or gas instead of coal in factories. Almost all machinery can be redesigned to increase energy efficiency and reduce noise. Question 37. Which is the most abundantly available fossil fuel in India? Mention its different forms. (2015 OD, 2014 OD ...
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Short Answer Type Question Answers. Ans. 1. ... Thus, formation of coal is a long drawn process spread over various periods. Ans. 7. Nuclear energy is expected 10 play an increasingly important role in India clue to the following reasons (i) India has limited reserves of coal and petroleum. Nuclear energy minerals like Thorium are found in ...
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Formation of Coal (Process) Coal is composed of carbon, hydrogen, oxygen, nitrogen, sulphur, moisture, and incombustible mineral matter (, ash). Fluorinated gases are not formed by coal combustion. Coals are formed from the accumulation of vegetable debris in specialized environments. Obtaining coal from the mines is a difficult job.
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Chemistry Fuels and Combustion Important Questions and Answers: Fuels and Combustion. 1. How fuels are classified. Give one example for each. Based on Occurrence 2 Types. Primary Fuels It occurs in nature such as. Ex: Coal, Crude oil, Natural Gas. Secondary Fuels It is derived from primary fuels.
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Coal and Petroleum Class 8 Extra Questions Very Short Answer Type. Question 1. Name some renewable sources of energy. Water, wind, solar. Question 2. Give some examples of fossil fuels. Coal, petroleum, natural gas. Question 3. Name the elements present in coal.
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