TS EAPCET (Engineering) General Principles of Metallurgy — practice questions
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Practice TS EAPCET (Engineering) General Principles of Metallurgy in the app →Which branch of engineering studies how metals are extracted from natural mineral deposits?Mineral processing of an ore begins with which step?Beneficiation first prepares the ore by which operation?During concentration of an ore, the percentage of metal in the ore is what?Froth flotation separates minerals from gangue using differences in which property?Which compound is a typical collector in the flotation of galena?Sphalerite, separated from galena by flotation, is the sulfide of which metal?In froth flotation, the mineral particles are carried to the water surface by what?Which substance is used as a frother to stabilise foam in flotation?What is the function of a depressant in froth flotation?Which of these is a typical depressant used in flotation?The first flotation stage, producing a rougher concentrate, is called what?Further flotation of tailings to recover valuable particles that missed the froth is called what?Further flotation of a rougher concentrate to reject unwanted minerals is called what?Fatty amines are used as collectors in the flotation of which mineral?Xanthate salts are popular flotation collectors for which type of mineral?Which Australian mining centre led the perfection of froth flotation in the early 1900s?The Jameson Cell produces fine bubbles by using what?In waste water treatment, what does a DAF unit stand for?Which branch of extractive metallurgy extracts metals from ores using aqueous solutions?What is the first step in a hydrometallurgical process?Which of these can be a final metal recovery step in hydrometallurgy?Which branch uses high-temperature reactions among gases, solids and molten materials?Pyrometallurgical gas-solid processes are typified by calcining and what?Pyrometallurgical processes that produce molten products are collectively called what?The heat for pyrometallurgy can come from oxidising sulfide to which product?Which tool helps predict the outcome of possible pyrometallurgical reactions?The two most common electrometallurgical processes are electrowinning and what?In electrowinning, on which electrode is the metal of interest plated?Electro-refining dissolves an impure metallic anode to produce what?In fused salt electrolysis, the electrolyte in which the metal is dissolved is what?Ionometallurgy makes use of which kind of solvents?A deep eutectic solvent has a melting point that is what?Most deep eutectic solvents combine a hydrogen-bond donor with which salt?Which process is still considered the prime technology to recover gold from ores?Which toxic metal do artisanal miners use to concentrate gold and silver?What is the formula of chalcopyrite?Which of these metals belongs to the platinum group?In which year did Harold Ellingham first construct his temperature-stability plots?Ellingham lines for metal oxide formation are roughly straight with what slope?The slope of an oxide-formation Ellingham line is proportional to which quantity?The lower a metal's line on an Ellingham plot, what is true of its oxide?Which oxide is more stable at ordinary temperatures?As temperature rises, the stability of metallic oxides does what?Which oxide easily undergoes thermal decomposition because it is highly unstable?Above about 700 °C, which oxide of carbon dominates per the Boudouard reaction?Aluminium reducing iron oxide to iron is the basis of which reaction?At the intersection of two Ellingham lines, the free energy change of the reaction is what?Above the intersection temperature, the Gibbs energy of the reduction is what?The aluminothermic process is used to extract chromium and which other metal?Which gas can by itself reduce iron oxides in direct reduction of iron?What is the main use of Ellingham analysis in extractive metallurgy?The wetting activity of a surfactant on a particle can be quantified by measuring what?Bubble-particle attachment involves collision, attachment and which third step?