A mineral is called ore if:
Correct answer: C. A metal can be extracted profitably from it
- A. The metal present in the mineral is costly
- B. A metal can be extracted from it
- C. A metal can be extracted profitably from it
- D. A metal cannot be extracted from it.
Explanation
Option C is correct. A mineral is termed an ore if a metal can be extracted profitably from it. The cost of extraction must be less than the value of the metal. Options A, B, and D are incorrect because they do not consider the profitability aspect of extraction, which is crucial in defining ores.
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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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