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Which of the pairs of ores are carbonate...

Which of the pairs of ores are carbonate ores ?

A

`1`. Magnesite and Magnetite

B

`2`. Magnesite and Lime stone

C

`3`. Magnetite and Haematite

D

`4`. Bauxite and Zincite

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
  1. The substance added to remove the impurity is

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  2. Which of the following slag is formed between CaO and SiO2?

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  3. Which of the pairs of ores are carbonate ores ?

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  4. Method of extraction of metal from purified ore depends on

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  5. More active metals are not obtained from their ores by simple reductio...

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  6. ‘Na' metal is prepared from fused NaCl by

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  7. Which combination is wrong for the extraction of sodium metal from fus...

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  8. Which of the following step is not involved in the extraction of Ag ?

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  9. Which of the following impurities are present in a metal after reducti...

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  10. The selection of process of purification of a metal depends on:

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  11. Liquation is used for purification of metal if:

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  12. Chemically rust is a

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  13. When an Iron object is painted, the process of corrosion is reduced du...

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  14. The furnaces in which there is no direct contact between the hearth an...

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  15. Active metals are not extracted by the electrolysis or aqueous electro...

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  16. Which of the following is wrong?

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  17. Which of the following is correct about calcination ?

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  18. Which of the following is true about preparation of Iron by smelting p...

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  19. Which of the following is true about the electrolytic refining of meta...

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  20. Aluminium is more reactive than Iron, but rate of corrosion in Iron is...

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