Which of the following is an acidic flux?

Which flux is used in the extraction of iron from hematite in a blast furnace?

The element which could be extracted by electrolytic reduction of its oxide dissolved in a high temperature melt is:

In the Goldschmidt thermite process,which substance acts as the reducing agent?

Explain the theory of reduction of metal oxides with carbon as a reducing agent,or explain the role of a reducing agent in the reduction of metal oxides.

At a site,low grade copper ores are available and zinc and iron scraps are also available. Which of the two scraps would be more suitable for reducing the leached copper ore and why?