Which of the following is true of lime-based flux?
Oa. It produces less spatter.
Ob. It produces a stable, smooth arc.
Oc. It is acidic.
Od. It is generally unsuitable for out-of-position welding.



Answer :

Final answer:

Lime-based flux acidity varies with water content, impacting its interaction with metal oxides.


Explanation:

Lime-based flux can have varying acidity, determined by its water content. Wet flux is more acidic, capable of dissolving metal oxides, while dry flux is more basic, causing oxides to precipitate. Molten hydroxide fluxes are used in synthesizing oxide crystals like the perovskite superconductor.


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