Coal 2
Coal 2
Coal 2
10. The type of ventilation in which dwells on the principle that air
flow from a high pressure to a low pressure area
A. Natural ventilation C. Natural draft
B. Lime Dusting D. Mechanical Ventilation
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B. Hydrogen Sulfide D. Carbon Monoxide
20. The allowable limit of Methane gas in underground coal mines should
not be more than
A. 3 % by volume C. 10 ppm
B. .01 % by volume D. 1.0 % by volume
21. Per DOE Coal Mines Safety Rules and Regulation, the allowable limit
for Carbon Dioxide underground is:
A. 0.5 % by volume C. 10 ppm
B. 20 % by volume D. 4.0% by volume
24. a poisonous gas that has strong affinity to hemoglobin in the body.
A. Ascetic Acid C. Carbon Monoxide
B. Methane gas D. Carbon Dioxide
26. A deadly gas which is the product of Mine fires and it is usually
present in old Coal mine workings.
A. Nitrous Oxide C. Carbon Monoxide
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B. Methane D. Butane
27. A poisonous gas that has a rotten egg odor when it is present in
small concentration.
A. Oxygen C. Petron Gas
B. Methane D. Hydrogen Sulfide
30. The class “A” mine underground has at least _____ workers.
A. 150 C. 250
B. 125 D. 200
34. It is formed from the decay of plant and animals and from planktonic
organism millions of years ago under s suitable environment and
temperature.
A. Geothermal steam C. Oil and gas
B. Olive Oil D. Water
36. The Malampaya Gas Field is supporting Gas powered Power Plants in
Batangas at:
A. 700 MW C. 2700 MW
B. 300 KW D. 200 MW
37. Oil reservoir will be known thru Seismic survey but to determine its
presence and quantity ____ must be conducted:
A. Prospecting C. drilling
B. Assaying D. Sampling
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B. Diameter D. Radiation
40. A method of Drilling used to access resources not directly below the
drilling area:
A. Diamond Drilling C. Directional Drilling
B. Dry Drilling D. Offshore Drilling
46. A development opening driven from the surface along the dip of the
coal seam or with the host rock either on the footwall or hanging wall:
a. adits
b. inclined shaft
c. cross-cuts
d. all of the above
47. Interconnection of two levels usually driven from the lower level
for ventilation and escapeway purposes:
a. cross-cuts
b. drifts
c. raises
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d. none of the above
50. Used in determining the average velocity of the air current passing
in an airway:
a. hygrometer
b. thermometer
c. anemometer
d. none of the above
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