An air sample produces 8% CH4 and 3% H2. If the lower flammability of CH4 is 5% and H2 is 4%, what is the lower flammability of the mixture?
A. 9.50%
B. 7.16%
C. 4.68%
D. 3.90%
Answer: Option C
This Question Belongs to Mining Engineering >> Mine Ventilation
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