Application of Thermodynamic Principles of Metallurgy

How is 'cast iron' different from 'pig iron'?

The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.

Write chemical reactions taking place in the extraction of zinc from zinc blende.

Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?

Is it true that under certain conditions, Mg can reduce SiO₂ and Si can reduce MgO? What are those conditions?

Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.

The reaction,

Cr₂O₃ + 2Al → Al₂O₃ + 2Cr

 (ΔG^θ = -421kJ) is thermodynamically feasible as is apparent from the Gibbs energy value.  Why does it not take place at room temperature?

State the role of silica in the metallurgy of copper.