2. Questions Bank
  3. 8th Class
  4. Science
  5. Coal and Petroleum

8th Class Science Coal and Petroleum Question Bank Coal and Petroleum Conceptive Subjective Problems

  • question_answer
    (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?

    Answer:

    (i) Carbon dioxide            (ii) Coal gas (iii) It is used in the extraction of metals.


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