GK
CHEMISTRY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tin
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Mica
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Copper
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Aluminium
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Detailed explanation-1: -Bauxite is the name given to aluminium ore. To generate aluminium oxide, bauxite is purified, a white powder from which aluminium can be extracted. Aluminium oxide has a very high melting point of more than 2000° C which makes melting very expensive.
Detailed explanation-2: -Bauxite ore (Al2O3, impure) is first purified to form pure Al2O3. And then it goes through the Electrolysis process to give Aluminium metal at the cathode. Aluminium cannot be extracted by heating alone because aluminium is very reactive and it hangs on with oxygen and does not form aluminium metal.
Detailed explanation-3: -Aluminium is extracted from Bauxite ore. Aluminium is used to make utensils, foils, electric wires and other things.
Detailed explanation-4: -Aluminium ore is called bauxite (Al 2O 3). The bauxite is purified to yield a white powder – aluminium oxide (also known as alumina) – from which aluminium can be extracted.
Detailed explanation-5: -Bauxite is also used in the production of high-alumina cement, as an absorbent or catalyst by the oil industry, in welding rod coatings and as a flux in making steel and ferroalloys. Alumina’s primary use is as feedstock for aluminium smelters, however it is also used for other industrial purposes.