Mine Ventilation - Study Mode
[#151] H 2 S inflammable limits.
Correct Answer
(A) 4.3 - 45
[#152] The formula for finding density of moist air in S.I units in kg/m 3 .
Correct Answer
(A) $$left[ {frac{{B,0.378,e}}{{287.1,T}}}
ight]{10^3}$$
[#153] The cause which tend to cool the air in mine . . . . . . . .
Correct Answer
(C) local cooling effect
[#154] The effect of breathing air containing CO % in air is 0.02, the symptoms are
Correct Answer
(A) headache
[#155] Range of middle infrared in optical spectrum is
Correct Answer
(D) 2.5 - 25μ