The ratio of acetylene to oxygen is approximately for neutral flame us

1.	The ratio of acetylene to oxygen is approximately for neutral flame used in gas welding
A.	1 : 1
B.	1 : 3
C.	4 : 3
D.	None of these
Answer» B. 1 : 3

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The ratio of acetylene to oxygen is approximately for neutral flame used in gas welding

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