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The metal always found in free state is...

The metal always found in free state is

A

Au

B

Ag

C

Cu

D

Na

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. The process employed for the concentration of sulphide are is

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  2. Zone-refining is used for the

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  3. The metal always found in free state is

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  4. Bauxite is an ore of

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  5. Most abundant element in earth’s crust is

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  6. Which of the following ore is concentrated by the froth floatation pro...

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  7. The most impure form of iron is called wrought iron. (True or False)

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  8. Argentite is an ore of silver. (True or False)

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  9. Haematite is an ore of .

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  10. What is the function of reduction in the metallurgical operations? Dis...

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  11. What is meant by leaching ? Explain with an example.

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  12. Why is zinc not extracted from zinc oxide through reduction with CO?

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  13. Carbon monoxide (CO) gas is more dangerous than carbon dioxide (CO2) W...

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  14. A chemical compound is used treat indigestion, stomach acid, heart bur...

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  15. Predict conditions under which Al might be expected to reduce MgO.

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  16. White vitriol is used for-

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  17. The commercial name of zinc sulphate is-

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  18. What is froth floatation process ? Name the ores which are concentrate...

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  19. List important steps for the extraction of zinc from zinc blende .

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  20. Outline the principles involved in the following methods of refining o...

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