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The substance widely used to remove sili...

The substance widely used to remove silica present as impurity, from the ore is

A

`CaO`

B

`P_2 O_5`

C

`SiC`

D

`Na_2 CO_3`

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The correct Answer is:
A
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AAKASH SERIES-PRINCIPLES OF METALLURGY-PRACTICE EXERCISE
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  2. Refractory metals are used in construction of furnaces because

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

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

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

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  6. Siderite mineral is

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

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  8. In sulphatizing roasting of Zns, products are

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

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

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

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  12. Impurities in the zinc spelter are

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  13. Role of limestone used in re extraction

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  14. The purest form of commercial iron is

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  15. Percent purity of iron in cast iron is

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

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  17. Which of the following metals can be used for precipitation of silver ...

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  18. In the Down's process at low temperature sodium extracted is more beca...

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  19. Aqueous sodium cyanide is used as a reagent in the metal extraction. T...

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  20. Metal is precipitated from Au(CN)(4)^(3-) using zinc as a precipitant....

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