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Pick up the correct statement(s) :...

Pick up the correct statement(s) :

A

All minerals are ores

B

All minerals cannot be an ore

C

All ores are minerals

D

The minerals from which metals can be extracted profitably are called ores

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The correct Answer is:
To solve the question of identifying the correct statements regarding minerals and ores, we need to analyze the definitions and relationships between these terms. ### Step-by-Step Solution: 1. **Understanding Minerals and Ores**: - **Minerals**: Naturally occurring compounds of metals found in the Earth's crust. They can be mined but not all can be extracted profitably. - **Ores**: Specific types of minerals from which metals can be extracted economically and conveniently. 2. **Analyzing the Statements**: - **Statement 1**: "All minerals are ores." - This statement is **incorrect** because not all minerals can be extracted profitably. Some may not be economically viable for extraction. - **Statement 2**: "All minerals cannot be ores." - This statement is **correct**. Since not all minerals can be extracted profitably, it is true that all minerals cannot be classified as ores. - **Statement 3**: "All minerals are minerals." - This statement is **redundant** and does not provide any useful information. It is trivially true but does not contribute to our understanding of the relationship between minerals and ores. - **Statement 4**: "All ores are minerals." - This statement is **correct**. By definition, ores are a subset of minerals. If a substance is classified as an ore, it must contain minerals. - **Statement 5**: "The minerals from which metals can be extracted profitably are called ores." - This statement is **correct** and aligns perfectly with the definition of ores. 3. **Conclusion**: - The correct statements are: - Statement 2: "All minerals cannot be ores." - Statement 4: "All ores are minerals." - Statement 5: "The minerals from which metals can be extracted profitably are called ores." ### Final Answer: The correct statements are: - All minerals cannot be ores. - All ores are minerals. - The minerals from which metals can be extracted profitably are called ores.
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VK JAISWAL ENGLISH-METALLURGY-One OR MORE ANSWERS IS/ ARE CORRECT
  1. Which of the following reaction in the blast furnace is / are endother...

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  2. The funace lining in steel manufacture consists of :

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  3. Pick up the correct statement(s) :

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  4. Which of the following metal (s) is /are commercially extracted by sel...

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  5. Which of the following process makes the ore porous ?

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  6. Which of the following ores is / are oxide ore (s) ?

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  7. Roasting of copper pyrites is done:

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  8. Which of the following is a correct statement ?

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  9. In which of the following pairs, both the minerals are oxides ?

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  10. Which of the following mineral does not contain sodium ?

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  11. Which of the following pair consists of ore of the same metal ?

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  12. The process (es) by which lighter earthy particles are freed from the ...

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  13. Roasting is carried out to :

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  14. The chemical treatment of the ore for concentration is done in the cas...

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  15. Froth floatation :

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  16. Which of the following reaction(s) occurs during calcination?

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  17. Amphoteric nature of aluminium is employed in which of the following p...

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  18. Which of the following is true for calcination of metal ore ?

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  19. The difference (s) between roasting and calcination is / are :

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  20. The etraction of metals from oxide ores involves

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