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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Removal of pyretic sulfur and other heavy metals such as mercury. Predeshaling for steam/metallurgical coal preparation. Coal cleaning in arid and cold area. Recovering coal from gob piles. Use our innovative dry coal preparation process save money and resources. Visit our site or call (859) now for your free performance estimate.
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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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Sulfur dioxide, SO2, is a colorless gas or liquid with a strong, choking odor. It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores (aluminum, copper, zinc, lead, and iron) that contain sulfur. In nature, volcanic eruptions can release sulfur dioxide into the air.
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Here you can get Class 8 Important Questions Science based on NCERT Text book for Class 8. Science Class 8 Important Questions are very helpful to score high marks in board exams. Here we have covered Important Questions on Coal and Petroleum for Class 8 Science subject. Very Short Answer Questions. 1. Write the names of two natural substances.
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These solutions cover important concepts in different patterns like MCQs and short answer questions, worksheets and more and help you top score good marks in the exam. ... As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation. Question 4: Fill in the blanks. (a) Fossil fuels are ...
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Coal and Petroleum Class 8 Extra Questions Very Short Answer Questions. Coal And Petroleum Class 8 Extra Questions Question 1. Name some renewable sources of energy. Answer: Water, wind, solar. ... Question 9. The process of conversion of wood into coal is called (a) carbonisation (b) catagenesis (c) carboniferous (d) none of these.
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(c) The black, thick liquid with an unpleasant smell is known as coal tar. (d) During the processing of coal to get coke, coal tar and coal gas are also obtained. (e) The process of separating the various constituents of petroleum is known as Fractional Distillation. (f) Excessive burning of fossil fuels is a major cause of Global Warming.
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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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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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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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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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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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The coal delivered from the mine that reports to the coal preparation plant is called runofmine, or ROM, coal. This is the raw material for the CPP, and consists of coal, rocks, middlings, minerals and contamination. Contamination is usually introduced by the mining process and may include machine parts, used consumables and parts of ground ...
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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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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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Which gas is formed when coal is heated in the absence of air? Answer: The process of burning or heating coal in the absence of air is known as destructive distillation. As a result of this process, coal tar and coal gas are produced. The coal gas is a mixture of gases containing hydrogen (H 2), methane (CH 4) and carbon monoxide (CO). Q7.
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Short Answer Type Questions. Question 1: Write some uses of coal. Answer: Uses of coal: ... Many useful products; like coke, coal tar and coal gas; are made by processing coal. Question 2: What is coke? Answer: Coke is almost pure form of carbon, is tough, porous and black. Coke is used in manufacture of steel and extraction of many metals.
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Coal is a black or brownishblack sedimentary rock that can be burned for fuel and used to generate is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil fuel in the United States.
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JOIN ADRE Telegram Group. Coal and Petroleum MCQs | Coal and Petroleum Multiple Choice Questions and Answers. coal and petroleum multiple choice questions and answers. Sunlight is a natural resource. Both (A) And (B) Uses of fuel includes : Produce Steam To Run The Engine. Produce Electricity In Thermal Power Plants.
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Question. The processing of raw coal involves "washing," in which coal ash (nonorganic, incombustible material) is removed. The article "Quantifying Sampling Precision for Coal Ash Using Gy's Discrete Model of the Fundamental Error" (Journal of Coal Quality, 1989:3339) provides data relating the percentage of ash to the density of a ...
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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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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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First, put vinegar and water in equal amounts and then run the boiler. This will swell the rusting from inside due to the steam formation and thus clean with hand by switching off the boiler. Q. How to bleed a boiler. Ans. Boiler flushing or boiler bleeding is a process of cleaning out the boiler inside and breaking out the jam inside the pipes.
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