(T/F) (b) CNG is more polluting fuel than petrol. (D) Coal tar is a mixture of various substances. True/False i. Fossil fuels can be made in the laboratory. Sol. (b) CNG is more polluting fuel than petrol. (T/F) (e) Kerosene is not a fossil fuel. Ans. Question 10: Mark the following as True/False. Tick true/false against the following statements. False ii. False iii. (e) Kerosene is not a fossil fuel. (T/F) Answer. Identify the substance which is tough, porous and black. (T/F) (c) Coke is almost pure form of carbon. Coal tar is a mixture of various substances. (c) Coke is almost pure form of carbon. Solution: Coke is a tough, porous and black substance. Tick True/False against the following statements: (a) Fossil fuels can be made in the laboratory. (C) Coke is almost pure form of carbon. (d) Coaltar is a mixture of various substances. (T/F) (d) Coal tar is a mixture of various substances. Presence of carbon in the steel makes it harder and more durable than pure iron. Coke is the fuel obtained from coal that is almost pure form of carbon. Coke is almost pure form of carbon. False vi. Coke is almost pure form of carbon. False . CNG is more polluting fuel than petrol. (a) Fossil fuels can be made in the laboratory. (T/F) (d) Coal tar is a mixture of various substances. It is almost a pure form of carbon. (b) CNG is more polluting fuel than petrol. (T/F) (b) CNG is more polluting fuel than petrol. (T/F) (b) CNG is more polluting fuel than petrol. True v. Kerosene is not a fossil fuel. (True) (e) Kerosene is not a fossil fuel. (False) (c) Coke is almost pure form of carbon. True (e) Kerosene is not a fossil fuel. SOLUTION: (A) False (B) False (C) True (D) True (E) False. Fossil fuels are formed over a period of millions of years, resulting due to the action of high temperature and … (T/F) (e) Kerosene is not a fossil fuel. Answer: (B) Coke. (T/F) (c) Coke is almost pure form of carbon. True (d) Coaltar is a mixture of various substances. False (b) CNG is more polluting fuel as compared to petrol. (False) Q.6 Explain why fossil fuels are exhaustible natural resources. (T/F) (e) Kerosene is not a fossil fuel. C. Coal tar. Crude oil. (c) Coke is almost pure form of carbon. (True) (d) Coal tar is a mixture of various substances. True iv. 5. Question 11: … Q 6. New questions in Science Write True if the statement is correct and change the underlined word if the statement is false.1. (E) Kerosene is not a fossil fuel. Coal gas was used for street lighting for the first time in London in 1810 and in … (d) Coal tar is a mixture of various substances. False (c) Coke is an almost pure form of carbon. (a) Fossil fuels can be made in the laboratory. (a)False (b)False (c)True (d)True (e)False. D. Coal gas. 5. Dear Student The given statement is True Thanks (T/F) Soln: a) False b) False c) True d) True e) False … Tick True/False against the following statements: (a) Fossil fuels can be made in the laboratory. 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