mine gases

  1. what is oxygen?



    B)
  2. What percent oxygen can a person most easily work in?



    C)
  3. What percent oxygen will a person breathe faster and deeper?



    D)
  4. The Earth's atmosphere consists of what percert oxygen?



    B)
  5. What is notrogen?


    A)
  6. The Earth's Atmosphere consists of what percent nitrogen?



    C)
  7. What is carbon dioxide (CO2)?



    A)
  8. What is the specific gravity of carbon dioxide?



    B)
  9. WHere might concentrated accumulations of carbon dioxide ordinarily be found?



    C)
  10. How is carbon dioxide detected?



    A)
  11. What percent of carbon dioxide is given off by the body during exhalation?



    A)
  12. What is methane (CH4)?



    A)
  13. What is the specific gravity of methane?



    C)
  14. where is methane usually found in mines?



    C)
  15. What is firedamp?



    B)
  16. what is the range of explosibility for methane?



    A)
  17. what is the percentage of methane required for maxium explosive violence?



    B)
  18. What is the percentage of oxygen below which no explosion of methane air mixture can occur?>



    C)
  19. What effect does atmosphere with reduced oxygen content have upon the explosibility of methane?



    B)
  20. What effect does coal dust in the air have upon the explosibility of methane?



    B)
  21. what dangerous gas is most likely to be encountered above a pillar fall?



    D)
  22. if a split of air above 20,000 cubic feet per minute contains 3% methane how many cubic feet per minute would be required to reduce the methane content?



    A)
  23. what is the least percentage of methane that can be detected with a flame safety lamp?



    B)
  24. what is meant by the diffusion of gases?



    B)
  25. where is methane normally found?



    B)
  26. what is carbon monoxide?



    A)
  27. what is the source of carbon monoxide?



    D)
  28. what is afterdamp?



    C)
  29. what is the principal poisonous gas produced by explosives?



    B)
  30. how much greater affinity does hemoglobin have for carbon monoxide than for oxygen?



    D)
  31. what is the specific gravity of carbon monoxide?



    A)
  32. what is hydrogen (H2)?



    B)
  33. what is the specific gravity of hydrogen?



    A)
  34. what is the explosive range of hydrogen?



    B)
  35. what is the ignition temperature of hydrogen?



    B)
  36. how is hydrogen detected?



    B)
  37. what mine gas can be detected by it odor?



    B)
  38. what is the specific gravity of hydrogen sulfide?



    B)
  39. what is the range of explosibility of hydrogen sulfide?



    B)
  40. what is the most violent explosive point of hydrogen sulfide?



    B)
  41. what is the temperature of ignition of hydrogen sulfide?



    D)
  42. what percentage of hydrogen sulfide will become dangerous after a 1/2 hour?



    B)
  43. what is the specific gravity of sulfur dioxide?



    C)
  44. what is the particular danger of sulfur dioxide?



    A)
  45. what is the first effect on a person exposed to sulfur dioxide?



    C)
  46. what is nitrogen peroxide?
    A) it is non-poisonous, incombustibile gas
    B) it is extremely poisonous gas frequently formed by the burning of high explosives
    C0 it is a combustibile non-poisonous gas, yellow in color
    D) it is a poisonous gas with a foul odor
    B
  47. what is the specific gravity of nitrogen peroxide?



    B)
  48. what percentage of nitrogen peroxide will be fatal?



    B)
  49. how may traces if nitrogen peroxide be detected?



    A)
  50. what is the particular danger of nitrogen peroxide?



    B)
Author
alicia0309
ID
91857
Card Set
mine gases
Description
Mine Gases, Coal Mine Foreman Test
Updated