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Which of the following reduction is suit...

Which of the following reduction is suitable for extraction of crude metal from the ores like K, Na, Mg, etc ?

A

`1`.Reduction by heating with C or CO

B

`2`. Reduction by electrolysis of their aqueous solutions

C

`3`. Reduction by electrolysis of the fused ore

D

`4`. None of the above

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
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  2. P: Extraction of the metal from Its ores depends on the physical prope...

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  3. Which of the following reduction is suitable for extraction of crude m...

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  4. P: Corrosion of iron is an oxidation process. Q : Corrosion occurs in...

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  5. Assertion (A) : Alloy metal does not undergo corrosion, Reason (R) : A...

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  6. Assertion (A) : Zn can be obtained by distillation method. Reason (R) ...

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  7. The product in the reduction of PbO with carbon is

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  8. What will happen if the displacement reaction takes place in between T...

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  9. What will happen if cinnabar heats ?

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  10. What will happen if a stainless steel rod placed in moisture air ?

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  11. There is metal oxide on a tool. The tool is made with

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  12. Two test tubes. 'A' and 'B' contains iron nails. In 'A' test tube iron...

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  13. Extract Na from NaCl, we obtain Na at

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  14. i) Bauxite (Al2O3 * 2H2O) ii) Copper iron pyrites (CuFeS2) iii) Gypsum...

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  15. Which of the following is not a mineral for iron metal ?

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  16. Which of the following undergoes an auto (self) reduction ? i) PbO i...

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  17. The process in which the ore is mixed with flux and fuel and strongly ...

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  18. Which of the following is not used to purification of a metal ?

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  19. Which of the following metal is low reactivity metal ?

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  20. Which of the following method is used for purification of Zinc ?

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