Chemistry
Fill in the blanks :
(a) During the concentration of bauxite ore, aluminium goes in …………… (soluble/insoluble) part because of its …………… (acidic/basic/amphoteric) nature.
(b) In Hoope's process, pure aluminium is collected at the …………… (top/bottom) of the electrolytic cell.
(c) Usually …………… (sulphide/carbonate) ores are subjected to …………… (calcination/roasting) which is done in the absence of air
(d) Zinc blende is converted to oxide by …………… (roasting/calcination) process.
(e) Froth floatation process is generally used to concentrate …………… ores (sulphides/carbonate)
Metallurgy
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Answer
(a) During the concentration of bauxite ore, aluminium goes in soluble part because of it's amphoteric nature.
(b) In Hoope's process, pure aluminium is collected at the top of the electrolytic cell.
(c) Usually carbonate ores are subjected to calcination which is done in the absence of air
(d) Zinc blende is converted to oxide by roasting process.
(e) Froth floatation process is generally used to concentrate sulphides ores.
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