Q131
When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.
A.
Neutral
B.
Oxidizing
C.
Carburizing
AnswerD.
None of these
Answer: Option C
Solution
Answer: Option C
Solution:
When more volume of acetylene and less volume of oxygen is supplied, then a Carburizing flame is obtained.Carburizing flame is one with little oxygen, which produces a sooty, lower-temperature flame. It is often used to anneal metal, making it more malleable and flexible during the welding process.