Which alloy contains $Cu$ and $Zn$?

Addition of high proportions of manganese makes steel useful in making rails of rail-roads because manganese

Identify the reaction that does $NOT$ occur in a blast furnace.

The smelting of iron in the blast furnace involves all the following processes except:

Given below are two statements related to Ellingham diagram:
Statement-$I$ : Ellingham diagrams can be constructed for formation of oxides,sulfides and halides of metals.
Statement-$II$ : It consists of plots of $\Delta_f H^0$ vs $T$ for formation of oxides of elements.
In the light of the above statements,choose the most appropriate answer from the options given below:

$A$ blast furnace is employed in the smelting of oxide ore with coke and flux in the metallurgy of: