Question

All ores are minerals, while all minerals are not ores, because

• A. the metal cannot be extracted economically from all the minerals
• B. minerals are complex compounds
• C. the minerals are obtained from mines
• D. All of these are correct

Hint:

Ore = mineral + economic viability.

Answer 1

The Correct Option is A

The question pertains to the understanding of the difference between ores and minerals. Here, we need to ascertain the statement that correctly explains why not all minerals qualify as ores. Let's break it down:

1. Definitions:
   • Minerals: A naturally occurring substance with a definite chemical composition. Minerals are formed through geological processes and are solid and stable at room temperature.
   • Ores: A type of mineral that contains a sufficient amount of a specific metal, which can be economically extracted and refined.
2. Explanation:
   • The key reason why all minerals are not considered as ores is economic feasibility.
   • For a mineral to be classified as an ore, it must contain a viable concentration of a specific metal that allows for its extraction to be conducted economically.
3. Analyze Options:
   • Option 1: "The metal cannot be extracted economically from all the minerals" - This is the correct explanation as it highlights the economic aspect required for a mineral to be considered an ore.
   • Option 2: "Minerals are complex compounds" - While this is true to some extent, it does not relate to why all minerals are not ores.
   • Option 3: "The minerals are obtained from mines" - This is a fact for both minerals and ores, and it does not distinguish between them.
   • Option 4: "All of these are correct" - This is incorrect as only the economic extraction factor correctly explains the difference.

Based on the analysis above, the correct answer is indeed: "The metal cannot be extracted economically from all the minerals."