M

Mr. Dubey • 52.30K Points
Coach 

Q. In which of the following type of flame, oxygen is of same proportion with acetylene?

(A) neutral flame
(B) oxidizing flame
(C) carburizing flame
(D) both oxidizing flame and carburizing flame
Correct : Option (A)

Explanation: 
 in neutral flame oxygen is in the same proportion with acetylene. neutral welding flames are commonly used to weld: mild steel, stainless steel, cast iron, copper, aluminium, etc.

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