Chapter 5
COAL And PETROLEUM
1. What are the advantages of using CNG and LPG as fuels?
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2. Name the petroleum product used for surfacing of roads.
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3. Describe how coal is formed from dead vegetation. What is this process called?
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4. Fill in the blanks.
(a) Fossil fuels are_____, _______ and _______.
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(b) process of separating of different constituents from petroleum is called _______.
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(c) Least polluting fuel for vehicle is ______.
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5. Tick True/ False against the flowing statements.
(a) Fossil fuels can be made in the laboratory. (T/ F)
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(b) CNG is more polluting fuel than petrol. (T/ F)
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(c) Coke is almost pure from of carbon. (T/ F)
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(d) Coal tar is a mixture of various substances. (T/ F)
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(e) Kerosene is not a fossil fuel. (T/ F)
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6. Explain why fossil fuels are exhaustible natural resources.
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7. Describe characteristics and uses of coke.
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8. Explain the process of formation of petroleum.
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9. The following Table shows the total power shortage in India from 1991-1997. Show the data in the from of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.
S.No. | Year | Shortage (%) |
1 2 3 4 5 6 7 | 2004 2005 2006 2007 2008 2009 2010 | 7.8 8.6 9.0 9.5 9.9 11.2 10.0 |
