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Reverberatory furnace is epmloyed in th...

Reverberatory furnace is epmloyed in the metallurgincal process mainly for

A

Reduction of oxide ores

B

Smelting of sulphide ores

C

Conversion of chloride to sulphate

D

Getting magnetic materials 4

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Verified by Experts

The correct Answer is:
A
It is used for smelting (reduction) of oxide and for roasting of sulphide ores.
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In the reverberatory furance

The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.

Choose the correct option the code regarding roasting process. (I) It is the process of heating the ore in air in a reverberatory furnace to obtain the oxide. (II) It is an exothermic process. (III) It is used for the concentration of sulphide ore. (Iv) It removes easily oxidisable volatile impurities present in the concentrated ore.

Assertion: In extraction of copper from chalcopyrite after roasting in supply of air ai moderate temperature, the temperature of the roasting ore is increased above the fusion temperature and then silica is added in reverberatory furnace. Reason: In the extraction of copper from chalcopyrites during smelting, the impurity of iron is removed as fusible slag (FeSIO_(3)) in blast furnace or reverberatory furnace.

Statement-1:Galena on heating in a reverberatory furnace above the melting point of metal gives metallic lead. Statement-2: Galena is partically converted to PbO and PbSO_(4) which ar reduced by excess galena to metallic lead.

The chief ores of iron are haemalite (Fe_2O_3) , magnetite (Fe_3O_4) , limonite (FeO(OH)) and siderite (FeCO_3) .In the extraction of iron , oxides ores of iron, after concentration through calcination/roasting in reverberatory furnace are mixed with lime stone and coke and fed into a blast furnace. Here, the oxide is reduced to the metal. Which of the following is obtained as a slag in the extraction of iron from haematite ore ?

ERRORLESS-GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS-NCERT BASED QUESTIONS (Reduction of Free Metal)
  1. Purpose of smelting of an one ore is –

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  2. The sunstance which is mixed with the ore for removel of impurities is...

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  3. Reverberatory furnace is epmloyed in the metallurgincal process main...

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  4. In the metallurgy of iron, when limestone is added to the blast furnac...

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  5. Which statement is correct ?

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  6. The final step for the extraction of copper from copper pyrite in Bess...

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  7. Which of the following fluxes is used to remove acidic impurities in ...

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  8. Blast furnace is employed in the smelting of oxide ore with coke and f...

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  9. Electrometallurgical process is used to extract

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  10. The electrolytic method of reduction is employed for the preparation o...

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  11. Aluminium is prepared in large quantities by

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  12. Thermite process is used to extract metals

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  13. Iron is obtained on a large scale from Fe2O3 by

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  14. After partial roasting, the sulphide of copper is reduced by

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  15. In the metallurgical extraction of zince from ZnO the reducting agent ...

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  16. The metal oxide which cannot be reduced to metal by carbon is

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  17. Which process of reduction of mineral to the matel is suited for the e...

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  18. Which of the following reaction is an example of autoreduction?

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  19. In the extraction of Cu from its sulphide ore, the metal is formed by ...

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  20. Elecyroltic refining is used to purify which of the following metals?

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