Science Class VIII Test From Ch. 5 - Coal And Petroleum
M.M: 32 marks Time: 30 minutes
Q 1: Name some Indian states where natural gas has been found. (2 marks)
Q 2: How would you classify the following sources of energy on the basis of their exhaustibility? (2 marks)
Coal, Sunlight, Petroleum, Air
Q 3: State whether True or False: (4 marks)
(i) Coal can be prepared in laboratory.
(ii) Under high pressure, temperature and absence of air conditions, dead plants were slowly converted into coal.
(iii) Petrol is not a fossil fuel.
(iv) Petrol, diesel and kerosene can be obtained by refining petroleum.
Q 4: Explain the process of carbonisation. (2 marks)
Q 5: How is petroleum formed? (3 marks)
Q 6: Write a short note on CNG. (3 marks)
Q 7: Match the following (4 marks)
Kerosene
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Used as a fuel in homes and industries
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Petrol
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Used as a fuel for automobiles, and in dry cleaning
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Liquefied Petroleum Gas (LPG)
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Used as a fuel for lamps, stoves and jet aircrafts
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Diesel
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Used as a fuel for heavy motor vehicles and electric generators
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Question 8: Write four ways for saving petrol/diesel? (4 marks)
Question 9: Fill in the blanks: (1 mark x 8 = 8 marks)
(i) _______, ________ and _________ are the products obtained by the processing of coal.
(ii) _______ is the purest form of carbon.
(iii) _______ is a petroleum product used in the place of _________ for laying roads.
(iv) _______ is a mixture of 200 substances. It is used for manufacturing drugs, dyes, perfumes, plastics, etc.
(v) _______ is used for the extraction of metals.
