Question #10544
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Which flux is used in iron and steel while brazing?

A.
Mixture of 70% borax powder with 30% boric acid
B.
Mixture of 75% borax powder with 25% boric acid
C.
Mixture of 80% borax powder with 20% boric acid
D.
Mixture of 85% borax powder with 15% boric acid
Explanation

No explanation provided.