Estimation of total iron in oxide ore comprises of three basic steps namely (i) extraction of iron into solution (ii) oxidation for volumetric analysis or precipitation for gravimetric analysis, and (iii) titration in volumetric analysis or ignition and weighting in gravimetric analysis. Which of the following concentrated acid is used for the first step i.e. extraction of iron into solution?
A. HNO3
B. H2SO4
C. HCl
D. either A, B or C
Answer: Option C
This Question Belongs to Metallurgical Engineering >> Metallurgical Analysis
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