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Which of the following process involve t...

Which of the following process involve the smelting process ?

A

`ZnCO_3 rarr ZnO + CO_2`

B

`PbS + 3O_2 rarr 2PbO + 2SO_2`

C

`Al_2O_2. 2H_2O rarr Al_2O_3 + 2H_2O`

D

`Fe_2O_3 + 3C rarr 2Fe + 3CO`

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BEYOND PUBLICATION-PRINCIPLES OF METALLURGY-EXERCISE
  1. Which of the following methods is suitable for preventing an iron fryi...

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  2. Point out correct statement Iron is :

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  3. Which of the following process involve the smelting process ?

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  4. During melting of haematite in a blast furnace………….is the flux added.

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  5. Low-melting metal like tin can be purified by this method

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  6. Low boiling metals like mercury and zinc are refined by

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  7. Which of the following are Sulphides ? Zinc Blende Rock Salt Cinn...

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  8. Which of the following are not ionic compounds ? KCl HCl CCl4 N...

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  9. Aluminium is used for making cooking utensils. Which of the following ...

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  10. Which of the following methods is suitable for preventing an iron arti...

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  11. The formula of carnalllite is

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  12. --------- group are called chalcogenes.

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

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  14. Blister copper is a

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  15. Which of the following is wrong about poling ?

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

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  17. More electropositive metals (more active metals ) are not prepared by ...

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

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

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  20. Buried underground pipes are coupled with small magnesium foils. This ...

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