Mine Ventilation - Study Mode
[#236] To make it an explosive, in which range of methane air mixture falls.
Correct Answer
(C) 5.4 to 14.8
[#237] What happens in a mine, there is a sudden drop in barrowmetric pressure . . . . . . . .
Correct Answer
(A) over flow of mine gases into working
[#238] The gas easily disolved by moisture in mine air
Correct Answer
(B) NO 2
[#239] The temperature and humidity monitor is
Correct Answer
(C) intrinsically safe
[#240] The relative rates of disfusion of number of gases vary inversely as square root of their relative densities called
Correct Answer
(D) Graham's law of diffusion