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Which reagent is predominantly used in pickling of stainless steel?(a) Iodic acid(b) Nitric acid(c) Phosphoric acid(d) Sulfuric acidI got this question in unit test.Origin of the question is P-Block Elements in division P-Block Elements of Chemistry – Class 12

Answer»

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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