In oxy-acetylene gas welding, for complete combustion, the volume of oxygen required per unit of acetylene is:

In oxy-acetylene gas welding, for complete combustion, the volume of o

1.	In oxy-acetylene gas welding, for complete combustion, the volume of oxygen required per unit of acetylene is:
A.	1
B.	1.5
C.	A positive pressure gradient
D.	2.5
Answer» D. 2.5

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In oxy-acetylene gas welding, for complete combustion, the volume of oxygen required per unit of acetylene is:
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In oxy-acetylene gas welding, for complete combustion, the volume of oxygen required per unit of acetylene is:

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