A. Hand picking
B. froth floatation
C. Electromagnetic separation
D. Leaching
PH of a solution produced when aqueous solution of PH 6 is mixed with an equal volume of an aqueous solution oh PH is about
A mixture of Haematite,coke and limestone on heating in blast furnace gives molten iron metal.This is known as
In lime kiln the reaction CaCO3(s)⇔CaO(s)+CO2(g)
During electrolytic reduction of aluminia,the reaction at cathode is
At 270C the Kp value for the reaction PCl5(g)⇔PCl3(g)+Cl2(g).is 0.65.Its Kc is
In which of the following reactions, the concentration of product is higher than the concentration of reactant at equilibrium (K=equilibrium constant)
NH4NO3 on heating to 2500C-2600C gives the gas
The transition temp.at which rhombic sulphur becomes monoclinic sulphur is
Number of coulombs of current required to convert completely 1 mole of MnO4- ions in acid medium to one mole of Mn2+ ions electrolytically is
Consider the two gaseous equilibria involving SO2 and the corresponding equilibrium constants at 298K
SO2(g)+1/2O2(g)⇔SO3(g);K1
2SO3(g)⇔2SO2(g)+O2(g);K2
The values of the equilibrium constants are related by