Mine Ventilation - Study Mode
[#161] The specific gravity of mercury is . . . . . . . .
Correct Answer
(D) 13.6
[#162] The dimensions of the OXD-2M instrument.
Correct Answer
(B) 192 × 80 × 50 mm
[#163] Ignition temperature of anthracite coal is
Correct Answer
(C) 400°C
[#164] Lower limit of inflammability of methane air mixture that participate in exposion
Correct Answer
(C) 5%
[#165] D 6 MSA methenometer works on the principle of
Correct Answer
(B) wheat stone bridge