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MCQs

Total Questions : 2441 | Page 2 of 245 pages
Question 11. Calorific value of dry wood may be around __________ Kcal/kg.
  1.    5
  2.    50
  3.    500
  4.    5000
 Discuss Question
Answer: Option A. -> 5
Question 12. Calorific value of bituminous coal may be around __________ Kcal/kg.
  1.    500
  2.    1500
  3.    6500
  4.    20000
 Discuss Question
Answer: Option C. -> 6500
Question 13. Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg.
  1.    1000
  2.    4000
  3.    8000
  4.    15000
 Discuss Question
Answer: Option C. -> 8000
Question 14. Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.
  1.    6
  2.    12
  3.    18
  4.    24
 Discuss Question
Answer: Option D. -> 24
Question 15. Pick out the wrong statement.
  1.    Pulverised fuel can be completely burnt with less percentage of excess air compared to lump coal
  2.    Low grade coal can be used, but generally high volatile matter coals are more suitable for making pulverised fuel
  3.    Regulation of furnace temperature and atmosphere (oxidising or reducing) is easily possible with pulverised fuel firing
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 16. Volatile matter content of metallurgical coke may be around __________ percent.
  1.    1-2
  2.    10-15
  3.    22-26
  4.    30-33
 Discuss Question
Answer: Option A. -> 1-2
Question 17. Quantity of coke produced from metallurgical coal may be around __________ percent.
  1.    30
  2.    50
  3.    75
  4.    95
 Discuss Question
Answer: Option C. -> 75
Question 18. Abrasion index of blast furnace coke should be around __________ percent.
  1.    20
  2.    35
  3.    55
  4.    80
 Discuss Question
Answer: Option D. -> 80
Question 19. Natural draught produced by a chimney depends upon the
  1.    Density of the chimney gases
  2.    Height of the chimney
  3.    Both A & B
  4.    Neither A nor B
 Discuss Question
Answer: Option C. -> Both A & B
Question 20. Which of the following is not a binder for coal briquetting?
  1.    Coal tar
  2.    Bitumen
  3.    Molasses
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these

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