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For the electrolysis of NaCl, a large qu...

For the electrolysis of NaCl, a large quantity of electricity is required to keep the ore in molten state. We can save electricity by

A

Adding water to the ore

B

adding impurities to the ore

C

adding pine oil to the ore

D

mixing with a log

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
  1. Which of the following is the correct formula of gypsum?

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  2. Which of the following is not sulphide ore ?

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  3. In which of the following method a stream of water is used ?

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  4. Which of the following is a chemical method ?

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  5. Which of the following is wrong about poling ?

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  6. Which of the following is the correct order of activities series ?

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  7. Which of the following metal is not available in native state ?

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  8. Which method is most suitable to enrich the sulphide ores ?

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  9. Which of the following is slag formed in the smelting of iron ?

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  10. The parts 5 and 2 are

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  11. Which part is labelled wrong ?

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  12. Which reaction is appreciable for its role to join railings of railway...

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  13. Alloys are appreciable because

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  14. For the electrolysis of NaCl, a large quantity of electricity is requi...

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  15. Assertion (A) : The reaction 2Al + Fe2O3 rarr Al2O3 + 2Fe + heat is t...

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  16. Which of the following is not suitable for a saw to present rusting ?

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  17. To separate husk from cooking rice method is suitable.

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  18. Which of the following is suitable to water supply in our home?

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  19. Which of the following cannot prevent the formation of rusting ?

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  20. reaction is used in joining railings of railway tracks.

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