Which reagent is predominantly used in pickling of stainless steel?

Iodic acid

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Nitric acid

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Phosphoric acid

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Sulfuric acid

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Solution

The correct option is B Nitric acid
Pickling of stainless steel is the process of removal of a thin layer of the alloyed metal from the surface. The common reagent used is nitric acid along with calculated amounts of hydrofluoric acid.

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