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Froth flotation process is generally emp...

Froth flotation process is generally employed for _____ ores.

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The correct Answer is:
Sulphide
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One of the processes used for concentration of ores is Froth floatation process. This process is generally used for concentration of sulphide ores. Sometimes in this process we add NaCN as a depressant. NaCN is generally added in case of ZnS and PbS minerals. what is the purpose of addition of NaCN during the process of Froth floatation?

Assertion : Froth flatation process is used to concentrate sulphide ores. Reason : There is a difference in the nature of wettibility of different ores.

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 ?

CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Fill In The Blanks)
  1. Iron is the most abundant element in the earth's crust.

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  2. Zinc blende is the ore of .

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  3. Froth flotation process is generally employed for ores.

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  4. The most abundant metal in earth's crust is .

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  5. Extraction of aluminium form alumina is done by .

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  6. The metal like Si, Ga etc., which are used in semiconductors, are puri...

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  7. The purification of crude metals is referred to .

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  8. Magnesite is an ore of .

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  9. The metal present in chlorophyll is

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  10. The process of reduction of oxides by aluminium is known as .

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  11. The process of removal of gangue form ore is known as .

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  12. Aluminium is obtained from Al(2)O(3) by reduction.

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  13. In the metallurgical process for the electro-refining of the metal, th...

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  14. Roasting is generally carried out in mineral.

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  15. Gold is usually found nearmineral.

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  16. Metal extracted from sea water is .

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  17. The naturally occurring chemical substances in form of which occur in ...

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  18. The earthly and siliceous impurities which generallty occur with ores...

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  19. Highly reactive elements occurs in nature instate.

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  20. Minerals from which metals are extracted conveniently and economically...

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