In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
Answer: B
In OAW, Acetylene (C₂H₂) produces higher temperature (in the range of 3200° C) than other gases, (which produce a flame temperature in the range of 2500° C) because it contains more available carbon and releases heat when its components (C & H) dissociate to combine with O₂ and burn.