Products obtained from coal tar are used as starting materials for manufacturing various substances used in everyday life and industry like dyes, drugs, naphthalene balls, paints, plastics, etc. Coal tar is a mixture of about 200 substances Products obtained from coal tar. Apr 23,2021 - Coal tar contains abouta)300 substancesb)400 substancesc)200 substancesd)100 substances.Correct answer is option 'C'. Interestingly, naphthalene balls used to repel moths and other insects are also obtained from coal tar. All Rights Reserved. Coal gas was used for street lighting because it has such properties. Coal tar is a black, thick liquid with an unpleasant smell. Fill them with popcorn/peanuts/roasted gram/toffees. Coal Tar is a Mixture of Various Substances. In India, oil is found in all the cities that is mentioned in the options. It is a complex mixture, the source of organic substances such as cresol , creosol , naphthalene , paraffin , phenol , and toluene . Coal n petroleum 1. Petrol is used as a fuel in light vehicles because it do not have the tendency to run heavy vehic, Diesel is used as a fuel in heavy vehicles because it have the tendency to run heavy vehicles. In the light of the availability of various resources in nature, natural resources can be broadly classified in to two kinds: These resources are present in unlimited quantity in nature and are not likely to be exhausted by human activities. Naphthalene balls used to repel moths and other insects are also obtained from coal tar. True, coal is used fuel in various industries because they are depend on the coal to run their indu. https://www.learncbse.in/lakhmir-singh-science-class-8-solutions-chapter-5 Coal tar is a mixture of about 200 substances. Coal tar is a mixture of about 200 substances. It is a mixture of about 200 substances. 17. toluene, phenol and naphthalene are used in the synthesis of important commercial products like dyes, paints, insecticides, drugs, plastics and explosives Coal is used as fuel in many industries because it has all features of fuel. It is a black, thick liquid with unpleasant smell. It may be that the earlier generations in some groups were concerned about the coming generation(s) and left something for them. Coke is used in the manufacture of steel and in the extraction of many metals. Coal is one of the fuels used to cook food because on that time there is no other option. I can't und… Get the answers you need, now! Ask questions, doubts, problems and we will help you. Coal tar is a mixture of about 200 substances. Can you explain this answer? (T / F) CBSE CBSE Class 8. Coal Tar: Coal tar is a mixture of more than 200 different substances which can be separated by fractional distillation. The temperature also rose as they sank deeper and deeper. Answer of Define the term coal tar Coal tar is a black, thick liquid with unpleasant smell. (b) Coal Tar It is thick black colour liquid having unpleasant smell. Amrita Learning © 2021. Hence, the correct answer to this question is option c. Coal tar is a mixture of about 200 substances. *it is a mixture of about 200 substances. Now, ask the second generation consumers from each group to do the same. Now, finally observe whether all the consumers of the third generation got the eatables or not. 18. Coal Tar is a Mixture of Various Substances. Coal gas is obtained during the processing of coal to get coke. In this chapter we will learn about some exhaustible natural resources like coal, petroleum and natural gas. 19. The process of separating the various constituents/fractions of petroleum is known as refinin, Many useful substances are obtained from petroleum and natural gas. Coal tar constituents may be absorbed via inhalation, ingestion, or dermal contact. Also observe if any thing is still left in any of the containers. Fill in the Bank. Coal tar fuel - 200 (CTF 200) is a mixture of a) Pitch and creosote oil b) Light oil and pitch c) Anthracene and crecosote oil d) Solar oil and pitch. Earlier, it was used in railway engines to produce steam to run the engine. Answer the following questions 1 Coal tar is a mixture of about_____ substances 2 Now a days_____, a petroleum product is used in place of_____ fit metalling the roads 3 _____ is used as a fuel in light automobiles whereas heavy motor vehicles run - Science - Coal and Petroleum Coal is as hard as stone because it is the physical property of coal. It is a mixture of about 200 substances. It is used as raw material for making various items; like synthetic dyes, drugs, explosives, perfumes, plastics, paints, photographic materials, roofing materials, naphthalene balls, etc. Bitumen is the product which is used in place of coal-tar for metalling the roads. Fill in the Bank. In manufacturing photographic materials 6. These sub-groups represent the consumers. Coal Tar: Coal tar is a mixture of more than 200 different substances which can be separated by fractional distillation. COAL AND PETROLEUM W e use various materials for our basic needs. Chemical Effects of Electric Current.xlsx. Coke, coal tar and coal gas are the products of coal. 17. They can be exhausted by human activities. Assume that the eatables in the container represent the total availability of an exhausible natural resource like coal, petroleum or natural gas. Fossil fuels were formed from the dead remains of living organisms millions of years ago. 1. True, coal is as hard as stone because its atoms are closely packed. Products obtained from coal tar are used as starting materials for manufacturing various substances used in everyday life and in industry, like synthetic dyes, drugs, explosives, perfumes, plastics, paints, photographic materials, roofing materials, etc. It is a mixture of about 200 substances. E.g. It is a mixture of about 200 substances. As more soil deposited over them, they were compressed. Textbook Solutions 5345. MCQ. It is a tough, porous and black substance. (b) Coal Tar It is thick black colour liquid having unpleasant smell. Ask students to observe carefully the availability of eatables in each container. Interestingly, naphthalene balls used to repel moths and other insects are also obtained from coal tar . Coal is processed in industry to get some useful products such as coke, coal tar and coal gas. About 300 million years ago the earth had dense forests in low lying wetland areas. Coal Tar It is black thick liquid It is a mixture of 200 different substances like naphthalene,benzene etc Uses It is used to make synthetic dyes, drugs, explosives, perfumes, plastics, paints, photographic materials Naphthalene balls which is used to repel moths and other insects is also obtained from coal tar Note: Coal gas: It is obtained during the processing of coal to get coke. Synthetic dyes, drugs, perfumes, plastics and paints. Some of them are found in nature and some have been made by human efforts. The coal tars are generally variable and complex mixtures of poly cyclic aromatic hydrocarbons, phenol as well as hetero cyclic compounds. Coal Tar: It is a black thick liquid with an unpleasant smell. Coal Tar: It is a black thick liquid with an unpleasant smell. Coal is one of the fuels used to cook food. It is a mixture of about 200 substances. Coal gas is obtained during the processing of coal to get coke. Syllabus. It is a mixture of about 200 substances. Coal, petroleum and natural gas are fossil fuels. Coal Tar is a Mixture of Various Substances. Petroleum and natural gas deposits. Why is coal tar a mixture of 200 substances? Coal tar. Coal tar (Chemical Abstracts Service Registry Number 8007-45-2) is a complex mixture of hydrocarbons produced by the pyrolysis of coal. True, When coal is heated in air, coal burns and produces mainly carbon dioxide. Coal tar is a mixture of about 200 substances. Coal tar: It is a thick, black viscous liquid. Most of these e.g. Course Hero is not sponsored or endorsed by any college or university. True, coal is used as a source of heat rather than light. It is a mixture of about 200 substances. Totally, there are roughly about 200 substances present in coal tar. 12. Petrochemicals are used in the manufacture of detergents. Divide students into groups of seven each. As hetero cyclic compounds primarily used in the extraction of many metals air, coal is used! 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