• Since it was formed from the remains of vegetation, coal is also called a fossil fuel. ... some plants grew into giant ferns and mosses. (c) The black thick liquid with an unpleasant smell is known as coal tar. The temperature also rose as they sank deeper and deeper. Wildlife, minerals, natural gas, coal and petroleum, etc. 13. Chapter 5: Coal and Petroleum. Coal is used as fuel because it provides high amount of heat. ... We know that coal is formed from dead vegetation. With the passage of time, as more and more soil got deposited on them, the buried plants were compressed. USES OF COAL Coal burns in air to produce heat and carbon dioxide. Under high pressure and temperature, slowly plants got converted into coal. Ancient bog plants, mostly sphagnum moss, are the fossils in peat. When heated in air produces a. (a) 15. Oxygen c. Carbon d. Sodium Ans . Pollution ____ is the introduction of harmful waste products chemicals, and substances into the environment. Peat is a fossil fuel that is the first stage in the long process of plant material turning into coal. 8. _____ and _____ form over millions of years from the decay of algae and tiny ocean animals called _____. Coal mainly contains a. Hydrogen b. As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation. Under high pressure and high temperature, dead plants got slowly converted to coal. The buried plants underwent carbonization and changed into coal. The slow process of conversion of dead vegetation into coal is called _____ Ans:Carbonization. 15. Explain the process of formation of coal. 14. 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. (b) The slow process of conversion of dead vegetation into coal is called carbonization. As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation. Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams.Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. These plants got buried into the bottom of the soil and deposited as fossil due to heat and pressure. Peatlands Thick, spongy layers of histosol eventually form peat. Carbon monoxide b. As more soil deposited over them, they were compressed. COAL • As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonization. C + O 2 → CO 2 Coal was used as fuel in steam engines. Since it was formed from the remains of vegetation, coal is also called a fossil fuel. In fact, bogs are often called "heaths" after the abundance of heather that blankets them. Carbonisation is a. Q46. • When heated in air, coal … Coke is the almost pure form of carbon. (b) 16. (b) Coal and petroleum are formed from the dead remains of organisms and are known as fossil fuels. Deep down the earth, pressure and temperature was very high. It is a non-crystalline form of carbon. Carbonization: The slow process of conversion of dead vegetations into coal is called carbonization. Coal: A fossil fuel, that forms by the decay of vegetation, which existed millions of years ago. The temperature also rose as they sank deeper and deeper. A COAL MINE 7. (a) The slow process of conversion of dead vegetation into coal is called carbonisation. 13. Slow conversion of dead vegetation Into coal b. Deposition of soil c. falling of trees d. None of these Ans . 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. nonrenewable. 7. Carbon dioxide c. Nitrogen dioxide d. Oxygen Ans . 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