8th Class Science Coal and Petroleum Question Bank

done Coal and Petroleum Conceptive Subjective Problems Total Questions - 10

• question_answer1)
  Assertion (A): Coal, Petroleum and Natural gas called fossil fuels Reason (R): Coal, Petroleum and Natural gas are formed by fossils, so they are called fossil fuels. (a) A is correct and R is the correct explanation of A. (b) A is correct and R is not the correct explanation of (c) A is correct and R is wrong. (d) A is wrong and R is correct.
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• question_answer2)
  (i) Which gas is produced when coal bums in air? (ii) Name the gas which is formed when coal is heated in the absence of air. (iii) What is the main use of coke?
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• question_answer3)
  (i) How many substances are found in coal tar? (ii) Write the uses of coal. (iii) Write the uses of coal tar.
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• question_answer4)
  (i) The explanted form of PCRA is __. (ii) The expanded form of CNG is __. (iii) The explanted form of LPG is __.
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• question_answer5)
  Why CNG is called clean fuel?
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• question_answer6)
  What are petrochemicals? What are their uses?
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• question_answer7)
  Why is natural gas called a very important fossil fuel in these days?
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• question_answer8)
  Why CNG is called clean fuel?
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• question_answer9)
  What are the harmful effects of using fossil fuels?
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• question_answer10)
  What are petrochemicals? What are their uses?
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