Coal and Petroleum MULTIPLE CHOICE QUESTIONS
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1 24 EXEMPLAR PROBLEMS 5 Coal and Petroleum MULTIPLE CHOICE QUESTIONS 1. Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource? (a) minerals (c) soil (b) water (d) plastic 2. Air is a natural resource and cannot be exhausted by human activities. It is known as inexhaustible natural resource. Which of the following is another inexhaustible natural resource? (a) coal (c) sun-light (b) petroleum (d) minerals 3. Which of the following is a pair of exhaustible natural resources. (a) coal and soil (c) water and petroleum (b) air and sun-light (d) wild life and minerals 4. Coal is processed in industries to get some useful products. Which of the following is not obtained from coal? (a) coke (c) coal gas (b) coal tar (d) CNG 5. Exhaustible natural resources are: (a) unlimited in quantity. (b) not dependent on nature. (c) limited in quantity. (d) not exhausted by human activities. 6. Fossil fuels are obtained from: (a) remains of non-living materials. (b) dead remains of birds only. (c) dead remains of insects only. (d) dead remains of living organisms. 7. Coal is formed from the remains of (a) vegetation only (c) both vegetation and animals (b) animals only (d) neither vegetation nor animals
2 COAL AND PETROLEUM Which substance is formed by the carbonisation of dead vegetation?. (a) coal (c) coal gas (b) coke (d) coal tar 9. Naphthalene balls are obtained from coal tar and are used as (a) mosquito repellant (c) moth repellant (b) honey bee repellant (d) snake repellant 10. Which of the following is not a constituent of petroleum? (a) paraffin wax (c) petrol (b) lubricating oil (d) coke 11. Petroleum was formed from organisms: (a) living on the land (c) living in the sea (b) living on the plants (d) living on the rocks 12. Choose the correct statement from the following: (a) It is difficult to transport natural gas through pipes. (b) The disadvantage of natural gas is that it can not be used directly for burning in homes. (c) Natural gas is stored under high pressure as compressed natural gas. (d) Natural gas cannot be used for power generation. VERY SHORT ANSWER Q UESTIONS 13. You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two? 14. What does CNG stand for and why is it considered to be a better fuel than petrol? 15. Name the petroleum product used as fuel for stoves, lamps and jet aircrafts. 16. Fill in the blanks in the following sentences. (a) Coal is one of the used to cook food. (b) When heated in air, coal burns and produces mainly gas. (c) Coal tar is a black, thick with an smell. (d) Petroleum, and are fossil fuels. (e) Forests and coal are natural resources.
3 26 EXEMPLAR PROBLEMS 17. The underlined words in the following sentences have been jumbled up. Write them in their correct form. (a) Loca is obtained from mines. (b) Umpetlore is a fossil fuel. (c) Rineryfe is a place where various fractions of peroleum are separated. (d) Keenrose is a fuel used in jet crafts. (e) Nutsgilh is an example of inexhaustible natural resources. 18. Fill in the blanks. (a) The slow process of conversion of dead vegetation into coal is called. (b) Coal and petroleum are formed from the dead remains of organisms and are known as. (c) The black thick liquid with smell is known as coal tar. (d) During the processing of coal to get coke, coal tar and are also obtained. (e) The process of separating the various constituents of petroleum is known as. (f) Excessive burning of fossil fuels is a major cause of. 19. Write True/False against the following statements. (a) Oxygen in air is an exhaustible natural resource. (b) Resources which are present in unlimited quantity in nature are called exhaustible natural resources. (c) Wildlife is an exhaustible natural resource. (d) Under high temperature and pressure, dead plants get slowly converted to coal. (e) CNG is less polluting fuel than petrol and diesel. SHORT A NSWER Q UESTIONS 20. Sunlight and air are inexhaustible natural resources. Comment. 21. Some natural resources are given in a box. Classify them into the exhaustible and inexhaustible natural resources. air, coal, natural gas, sunlight, petroleum, minerals, forests, oxygen.
4 COAL AND PETROLEUM Write two important uses of coke. 23. Write the characteristics and some important uses of coal. 24. Look at Fig. 5.1 where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer? Fig Fill in the blanks and complete the story. About 300 million years ago the earth had dense in low lying wetland areas. Due to natural processes, like, these forests got burried under the. As more deposited over them, they were compressed. The also rose as they sank deeper and deeper. Under high and high, dead plants got slowly converted into coal. 26. Match the items given in Column I with the items of Column II. Column I Column II (a) Used for road surfacing (i) Black gold (b) Natural gas (ii) Vaseline and candles (c) Petroleum (iii) Bitumen (d) Paraffin wax (iv) CNG
5 28 EXEMPLAR PROBLEMS LONG A NSWER QUESTIONS 27. Name the products obtained and their uses when coal is processed in industry. 28. We say fossil fuels will last only for a few hundred years. Comment. 29. We read in newspapers that burning of fuels is a major cause of global warming. Explain why. 30. While driving what are the tips we must follow to save petrol/ diesel/natural gas? 31. Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think survival of living beings would be possible.? If yes, why?, If not, why not? 32. Why petrol is exhaustible natural resource, whereas sunlight is not? Explain. 33. Write some important uses of the various constituents of petroleum. 34. Coal reserves are said to be enough to last for another hundred years. Do you think we need to worry in such case? Why or why not? 35. What steps would you suggest for the judicious use of fossil fuels? 36. Complete the crossword Fig. 5.2 with the help of the clues: Fig. 5.2
6 COAL AND PETROLEUM 29 Across Down 1. Fuels obtained form dead remains of living organisms. (6,5) 2. A process by which the various constituents of petroleum are separated. (8) 3. A porous black substance obtained form coal. (4) 4. Another name for motor fuel. (6) 5. The substance obtained by carbonisation. (4) 6. Fuel for heavy motor vehicles. (6) 7. A petroleum product used for road surfacing. (7) 8. Dead remains of sea animals got converted into it. (9)
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