Home › AP EAPCET (Engineering) › Chemistry › General Principles of Metallurgy › Which pair of operations typifies pyrometallurgi…
Which pair of operations typifies pyrometallurgical gas-solid processes?
ALeaching and cementation
BCalcining and roasting
CElectrowinning and refining
DFlotation and magnetic separation
Answer & Solution
Correct answer: B. Calcining and roasting
Gas-solid pyrometallurgy is typified by calcining and roasting, while molten-product operations are called smelting.
Related questions
Why can aluminium reduce Fe and Cr oxides in thermite?Why is carbon unsuitable for reducing Cr2O3?Which oxides decompose easily on heating, going by Ellingham plots?On an Ellingham plot, a lower position of a metal's line means its oxide is what?Froth flotation is described as the most important operation for recovering which kind of In electro-refining, the impure metal is placed as which electrode?In electrowinning, where does the metal from the solution get plated?Crushing, grinding and sieving of an ore to the needed size is the start of which stage?