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Which ore of the following is a mineral ...

Which ore of the following is a mineral of iron ?

A

Malachite

B

Cassiterite

C

Pyrolusite

D

Magnetite

Text Solution

Verified by Experts

The correct Answer is:
D
Magnetite is `Fe_3 O_4`
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-COMPETION FILE (Objective Questions) (Multiple Choice Question from competitive examinations)
  1. which of the following electronts is present as the impurity to the m...

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  2. Aluminium is extracted from Alumina (Al(2)O3 ) by electrolysis of a mo...

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  3. Which ore of the following is a mineral of iron ?

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  4. Which one of the following is not a sulphide ore ?

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  5. Roasting of sulphides gives the gas X as a by product. This is a colou...

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  6. Sphalerite is concentrated by

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  7. In the extraction of copper from its sulphide ore, the metal finally o...

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  8. 'Metals are usually not found as nitrates in their ores''. Out of the ...

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  9. Match the items of Column I with item of Column II and assign the corr...

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  10. Extraction of gold and silver involves leaching with CN^(-)ion.silver ...

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  11. Considering Ellingham diagram, which of the following metals can be us...

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  12. Which one is malachite from the following

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  13. Identify the reaction that does not take place in a blast furnace

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  14. In the alumino-thermite process, Al acts as :

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  15. In view of the signs of Delta(r)G^(@) for the following reactions : ...

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  16. Which method of purification is represented by the following equation?...

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  17. The function of potassium ethyl xanthate in froth floatation process i...

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  18. The first step in the extraction of copper from copper pyrites

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  19. The statement that is not correct is

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  20. Roasted copper pyrite on smelting with sand produces

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