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Question
Most of the oxy-acetylene welding is done with
oxidizing flame
neutral flame
carburizing flame
all of these
ANSWER : 2
Descrption
<p>Neutral Welding Flame. The neutral flame has a one - to - one ratio of acetylene and oxygen.</p> <p>It obtains additional oxygen from the air and provides complete combustion. It is generally preferred for welding.</p>
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