List of top Chemistry Questions on General Principles and Processes of Isolation of Elements asked in KCET

The incorrect statement about the Hall-Heroult process is:
Select the correct statement:
Among the following, the main reactions occurring in blast furnace during extraction of iron from haematite are 1. $Fe_{2}O_{3} + 3CO \to 2Fe + 3CO_{2}$ 2. $FeO + SiO_{2} \to FeSiO_{3}$ 3. $Fe_{2}O_{3} + 3C \to 2Fe + 3CO$ 4. $CaO + SiO_{2} \to CaSiO_{3}$
Electrolytic refining is used to purify which of the following metals ?
Van-Arkel method of refining Zirconium involves,
Copper is extracted from Copper pyrites by heating in a Bessemer converter. The method is based on the principle that
Cryolite is
The statement that is NOT correct is
The process of zone refining is used in the purification of
When limestone is heated, $CO_2$ is given off. The metallurgical operation is
The function of potassium ethyl xanthate in froth floatation process is to make the ore
Which one of the following statements is false?
In the electrolytic refining of Zinc ,.................
When compared to $\Delta G^\circ$ for the formation of $Al_2O_3$, the $\Delta G^\circ$ for the formation of $Cr_2O_3$ is
Ellingham diagram represents a graph of
$\Delta G ^ \circ \,Vs\, T$ plot in the Ellingham's diagram slopes downwards for the reaction
Which of the following reaction taking place in the Blast furnace is endothermic ?
Which of the following is not an ore of magnesium?
Gold is extracted by hydrometallurgical process, based on its property
In blast furnace iron oxide is reduced by
Which of the following pairs of elements cannot form an alloy ?
Flux is used to
Froth floatation process is used for the concentration of
A basic lining is given to a furnace by using