Which property of aluminium is used for extraction of metals from their ores?
Correct answer: B. Very strong affinity for oxygen
- A. Oxidizing nature
- B. Very strong affinity for oxygen
- C. High boiling point
- D. Both B and C
Explanation
Option B is correct. The property of aluminium that is used for the extraction of metals from their ores is its high affinity for oxygen. Aluminium is a highly reactive metal and it has a strong tendency to combine with oxygen. This property is used to extract aluminium from its ore, bauxite. Bauxite is a mineral that contains aluminum oxide. The aluminium oxide is extracted from bauxite by a process called Bayer's process. Option A is incorrect because aluminium's oxidizing nature is not the property used in extraction. Option C is incorrect because high boiling point does not play a role in the extraction process.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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