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The extraction of metal from the ore is...

The extraction of metal from the ore is

A

an oxidation process

B

a reduction process

C

a hydration process

D

a neutratlisaiton process

Text Solution

Verified by Experts

The correct Answer is:
B
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Which of the following pairs is not correctly matched with respect to the extraction of metals from their ores ?

Explain the role of each of the following in the extraction of metals from their ores : (i) CO in the extraction of nickel. (ii) Zinc in the extraction of silver. (iii) Silica in the extraction of copper.

Select the appropriate options and complete the following paragraph. (ores, gangue, metallurgy, free, electrolysis, minerals, combined, copper, iron, platinum) Based on their reactivity, most of the metals are found in ___ state in the earth's crust while some metals such as silver, gold and are found in free state. The compounds of metals which occur naturally in the earth's crust are known as ___ . The minerals from which metals can be profitably extracted are called ___ . Ores mined from earth usually contain large amount of impurities like sand , soil , etc. These impurities are called ___ . The extraction of metals from their ores and then refining them for use is known as _____

The following are some of the methods commonly employed for the extraction of metals from their ores. Which of the following methods is generally employed for the extraction of sodium ?

NARAYNA-METTALURGY-Concentration of the ore
  1. The olive oil used in froth floatation process is called

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  2. Which of the following is used as conditioner in froth floatation proc...

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  3. The collecting agent in froth floating process is

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  4. Leaching is a process of

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  5. Which of the following metal is leached by Cyanide process

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  6. Oxygen and hydrogen gases are produced at the anode and cathod erespec...

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  7. The extraction of metal from the ore is

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  8. Hand picking method is used for the concentration of the following ore

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  9. The earthy impurities present in the mineral are called

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  10. Method used for the concentration of tin stone ore is

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  11. The magnetic impurity present in cassiterite ore is

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  12. Generally sulphide ores are concentrated by following process

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  13. The ore that is concentrated by froth floatation process is

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  14. The olive oil used in froth floatation process is called

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  15. Which of the following is used as conditioner in froth floatation proc...

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  16. The collecting agent in froth floating process is

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  17. Leaching is a process of

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  18. Which of the following metal is leached by Cyanide process

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  19. Oxygen and hydrogen gases are produced at the anode and cathod erespec...

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  20. The extraction of metal from the ore is

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