Carbon dioxide c. Nitrogen dioxide d. Oxygen Ans . 15. (b) The slow process of conversion of dead vegetation into coal is called carbonization. Coke is the almost pure form of carbon. Deep down the earth, pressure and temperature was very high. A COAL MINE 7. Q46. 14. These plants got buried into the bottom of the soil and deposited as fossil due to heat and pressure. Under high pressure and high temperature, dead plants got slowly converted to coal. are exhaustible natural resources. C + O 2 → CO 2 Coal was used as fuel in steam engines. It is a non-crystalline form of carbon. Under high pressure and temperature, slowly plants got converted into coal. 13. Explain the process of formation of coal. Coal is used as fuel because it provides high amount of heat. Under high pressure and high temperature, dead plants got slowly converted to coal. Acid Rain ____ is produced when gases released by burning oil and coal mix with water in the air. (b) Coal and petroleum are formed from the dead remains of organisms and are known as fossil fuels. Wildlife, minerals, natural gas, coal and petroleum, etc. (b) 16. 7. Ancient bog plants, mostly sphagnum moss, are the fossils in peat. Since it was formed from the remains of vegetation, coal is also called a fossil fuel. Peatlands Thick, spongy layers of histosol eventually form peat. With the passage of time, as more and more soil got deposited on them, the buried plants were compressed. When heated in air produces a. _____ and _____ form over millions of years from the decay of algae and tiny ocean animals called _____. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. (a) 15. Coal: A fossil fuel, that forms by the decay of vegetation, which existed millions of years ago. (c) 14. Oxygen c. Carbon d. Sodium Ans . The temperature also rose as they sank deeper and deeper. Slow conversion of dead vegetation Into coal b. Deposition of soil c. falling of trees d. None of these Ans . • When heated in air, coal … nonrenewable. Question 8. Pollution ____ is the introduction of harmful waste products chemicals, and substances into the environment. (c) The black thick liquid with an unpleasant smell is known as coal tar. The buried plants underwent carbonization and changed into coal. (a) The slow process of conversion of dead vegetation into coal is called carbonisation. 13. Natural gas is called clean fuel because: (a) it burns without producing any smoke (b) it burns completely ... slow process of conversion of dead vegetation into coal (d) fast process of conversion of dead vegetation into coal. Peat is a fossil fuel that is the first stage in the long process of plant material turning into coal. ... Petroleum Conservation Research Association. The slow process of conversion of dead vegetation into coal is called _____ Ans:Carbonization. As more soil deposited over them, they were compressed. 8. COAL • As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonization. In fact, bogs are often called "heaths" after the abundance of heather that blankets them. Carbonisation is a. Carbonization: The slow process of conversion of dead vegetations into coal is called carbonization. USES OF COAL Coal burns in air to produce heat and carbon dioxide. Chapter 5: Coal and Petroleum. ... some plants grew into giant ferns and mosses. The temperature also rose as they sank deeper and deeper. As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation. As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation. 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