79. The explosive range of methane is 5% to 15% by volume in air. This means a vapor/air mixture of __________.

3 percent methane by volume is too rich to burn
5 percent methane by volume will give a reading of 100 percent LEL on a combustible gas indicator
10 percent methane by volume is too rich to burn
20 percent methane by volume is too lean to burn

« PreviousSkipNext »

Show clarification Download PDF

Comments (0)

There are no comments at the moment. If you found an error or think question is incorrect, tell everyone about it