Which of the following oxides cannot be reduced by hydrogen?
(b) Aluminium oxide
Which of the following slags is produced during extraction of iron?
Blister copper is
(c) Both are correct
In a thermite process is used as reducing agent.
From the Ellingham graph between Gibb’s energy and temperature, out of C and CO with is a better reducing agent for ZnO?
In blast furnace iron oxide is reduced by
(b) carbon monoxide
During the extraction of haematite, limestone is added which acts as
Ellingham diagram represents change of
(a) ΔG with temperature
In metallurgical process, aluminium acts as
(b) a reducing agent
Impurities of sulphur, silicon and phosphorus can be removed from cast iron by adding
(c) limestone which changes impurities into oxides and pass into slag