Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be

Question: Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be
[A].

9.5:1

[B].

12.5:1

[C].

15.5 :1

[D].

18.5 : 1

Answer: Option A

Explanation:

No answer description available for this question.