The important advantage$(s)$ of Lintz and Donawitz $(L.D.)$ process for the manufacture of steel is (are):

Which among the following is a nonferrous alloy?

Explain the following:
$(a)$ $CO_2$ is a better reducing agent below $710 \ K$ whereas $CO$ is a better reducing agent above $710 \ K$.
$(b)$ Generally,sulphide ores are converted into oxides before reduction.
$(c)$ Silica $(SiO_2)$ is added to the sulphide ore of copper in the reverberatory furnace.
$(d)$ Carbon and hydrogen are not used as reducing agents at high temperatures for certain metals.
$(e)$ Vapour phase refining method is used for the purification of $Ti$.

Which alloy contains $Cu$,$Sn$ and $Zn$?

Railway wagon axles are made by heating rods of iron embedded in charcoal powder. The process is known as

Ellingham diagrams can be drawn for which of the following?