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The methods chiefly used for the extract...

The methods chiefly used for the extraction of lead and tin from their ores are respectively

A

self - reduction and carbon reduction

B

self - reduction and electrolytic reduction

C

carbon reduction and self - reduction

D

cyanide process and carbon - reduction

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The correct Answer is:
C
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice Questions - Level - II
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  2. In the equation , 4M +8CN^(-) +2H2O+O2 rarr 4[M(CN)2]^(-)+4OH^(-), the...

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

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  4. The temperature of the slag zone in the metallurgy of iron using blast...

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  5. Which of the following methods is used for obtaining aluminium metal ?

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  6. The metal used to recover copper from a solution of copper sulphate is

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  7. Which of the following pair of metals is purified by Van Arkel method ...

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  8. Duralumin is used in aircraft industry for its light weight and high s...

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  9. Which one of the following is true in electrolytic refining ?

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  10. In the extraction of copper from its sulphide ore, the metal is formed...

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  11. The reduction of zinc oxide with coke occurs at temperature

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  12. Identify the alloy containing a non - metal as a constituent in it.

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  13. Aluminium is extracted from alumina (Al2O3) by electrolysis of a molte...

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  14. The chemical process in the production of steel from haematite ore inv...

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  15. The chemical composition of slag formed during the smelting process in...

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  16. The methods chiefly used for the extraction of lead and tin from their...

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  17. Which one contains both iron and copper ?

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  18. During the process of electrolytic refining of copper some metals pres...

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  19. Extraction of zinc from zinc blende is achieved by :

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  20. Which one contains both iron and copper ?

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