Which of the following metals can be extracted in its native state from the earth?GoldCopperMagnesiumTin2Which of the following metals can be extracted from its ore by reduction with carbon?MagnesiumAluminiumCopperPotassium3Which method could be used to extract calcium from the earth?Reduction by carbonElectrolysisMining as a native metalOxidation by oxygen4Which of the following statements is true?Oxidation is the gain of oxygen and displacement is the loss of oxygenOxidation is the gain of oxygen and reduction is the loss of oxygenReduction is the gain of oxygen and displacement is the loss of oxygenReduction is the gain of oxygen and oxidation is the loss of oxygen5Which substance is reduced in the reaction: Zinc oxide + carbon → zinc + carbon dioxide?ZincCarbon dioxideCarbonZinc oxide
Question
Which of the following metals can be extracted in its native state from the earth?GoldCopperMagnesiumTin2Which of the following metals can be extracted from its ore by reduction with carbon?MagnesiumAluminiumCopperPotassium3Which method could be used to extract calcium from the earth?Reduction by carbonElectrolysisMining as a native metalOxidation by oxygen4Which of the following statements is true?Oxidation is the gain of oxygen and displacement is the loss of oxygenOxidation is the gain of oxygen and reduction is the loss of oxygenReduction is the gain of oxygen and displacement is the loss of oxygenReduction is the gain of oxygen and oxidation is the loss of oxygen5Which substance is reduced in the reaction: Zinc oxide + carbon → zinc + carbon dioxide?ZincCarbon dioxideCarbonZinc oxide
Solution
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Gold and Copper can be extracted in their native state from the earth. This is because they are found in their elemental form and do not need to be reduced from an ore.
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Copper can be extracted from its ore by reduction with carbon. This is a common method used in the extraction of metals from their ores.
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Calcium can be extracted from the earth through the process of electrolysis. This is because calcium is a reactive metal that is not found in its native state.
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The true statement is "Oxidation is the gain of oxygen and reduction is the loss of oxygen". This is the basic definition of these two chemical reactions.
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In the reaction: Zinc oxide + carbon → zinc + carbon dioxide, Carbon is the substance that is reduced. This is because it gains oxygen to form carbon dioxide.
Similar Questions
Which pair of metals can be extracted from their ores using carbon?A:Iron and aluminiumB:Magnesium and potassiumC:Iron and copperD:Copper and sodium
Which of the following metal(s) is (are) extracted by self-reduction process?
Metals less reactive than carbon can be extracted using...A:ElectrolysisB:Displacement with a more reactive metalC:No extraction needed they are found as native metalsD:Reduction with carbon
State the names of 3 metals that can be extracted using carbon
What metals are extracted by electrolysis?A:Gold, platinum and silverB:Carbon, oxygen, bauxiteC:Zinc, iron, tin, copperD:Aluminium, sodium, potassium
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