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Carbonate or hydroxide ores are generall...

Carbonate or hydroxide ores are generally converted to their oxides by

A

Roasting

B

Calcination

C

Smelting

D

Fluxing

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PRINCIPLES OF METALLURGY-PRACTICE EXERCISE
  1. Nickel steel is used in making

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  2. Carbonate or hydroxide ores are generally converted to their oxides by

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  3. Most abundant metal in the earth's crust is

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  4. Gravity separation method is based upon.

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  5. Among the following statements the incorrect one is

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  6. Refractory metals are used in construction of furnaces because

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  7. The substance widely used to remove silica present as impurity, from t...

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  8. Extraction of aluminium from aluminium oxide (Al(2)//O(3))is het done ...

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  9. the most electropositive metals are isolated from their ors by

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  10. Siderite mineral is

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  11. Chemical composition of malachite is 'X'. Then the composition of azur...

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  12. In sulphatizing roasting of Zns, products are

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  13. In order to refine blister copper it is melted in a furnance and is st...

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  14. Which of the following process is used for concentration of ores and f...

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

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  16. Impurities in the zinc spelter are

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  17. Role of limestone used in re extraction

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  18. The purest form of commercial iron is

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  19. Percent purity of iron in cast iron is

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  20. Native silver metal forms a water soluble complex with a dilute aqueou...

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