Q65
A toxic gas flows into a mine working place at the rate of 2.52 m3/min. The concentration of the gas in the intake air is 0.25%. The minimum quantity of intake air in m3/min required to dilute the gas to its threshold limit value of 1.0% is
A.
123
B.
252
C.
295
D.
336
AnswerAnswer: Option D
Solution
Answer: Option D
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