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Which reagent is predominantly used in pickling of stainless steel?

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in Chemistry – Class 12 by (188k points)
Which reagent is predominantly used in pickling of stainless steel?

(a) Iodic acid

(b) Nitric acid

(c) Phosphoric acid

(d) Sulfuric acid

I got this question in unit test.

Origin of the question is P-Block Elements in division P-Block Elements of Chemistry – Class 12

1 Answer

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Correct answer is (b) Nitric acid

Easy explanation: 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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