THE EARTH
INTERNAL STRUCTURE OF EARTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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P waves
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Lower mental
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L waves
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None of these
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Detailed explanation-1: -Magnesium oxide can be reduced by both aluminum and silicon when the temperature is above 1150°C. In the process of heating up, the mixture of aluminum, ferrosilicon and calcined dolomite forms Mg2Al4Si5O18 and Ca3Al2(OH)12 phase with the components in calcined dolomite.
Detailed explanation-2: -Those at the top and bottom are most keen to react with other elements to form compounds. Less reactive metals will displace other metals from their compounds. For example, magnesium will displace iron from iron oxide to form iron and magnesium carbonate.
Detailed explanation-3: -Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO 2, most commonly found in nature as quartz. In many parts of the world, silica is the major constituent of sand.
Detailed explanation-4: -Silica is a group IV metal oxide, which has good abrasion resistance, electrical insulation and high thermal stability.