Most of the oxyacetylene welding is done with

A. Neutral flame

B. Oxidizing flame

C. Carburising flame

D. All of these

Answer: Option A

Solution(By Examveda Team)

The neutral flame is the flame in which the amount of oxygen is precisely enough for burning, and neither oxidation nor reduction occurs. A flame with a good balance of oxygen is clear blue. The reducing and neutral flames are useful in soldering and annealing.
The neutral flame has a one-to-one ratio of acetylene and oxygen. It obtains additional oxygen from the air and provides complete combustion. It is generally preferred for welding.