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What is the material collected from reve...

What is the material collected from reverberatory furnace in the metalurgy of copper ?

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The material collected from reverberatory furnace, in case of metailuray of copper, is called matte. It contains high percentage of copper as `Cu_2S`.
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Assertion: Silica is added as a flux in reverberatory furnace, in the extrcation of copper from copper phyrites. Reason: Silica decreases the melting point of the ore and increases the conductivity.

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.

AAKASH INSTITUTE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Assignment (Section-D) Assertion-Reason Type Question
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  3. A: Bauxite is purified by leaching process R: Aluminium oxide reacts ...

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  4. A: Calamine and Dolomite are the carbonate ores. R: Calamine is ZnCO...

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  5. A: Roasting process is involved in the metallurgy of Cu from Malachite...

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  6. A: Metallurgy of Ag from Argentite is known as hydro-metallurgy R: Ar...

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  7. A: In the manufacturing of iron from hematite, silicon dioxide is adde...

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  8. A: Ultrapure metals are obtained by zone refining. R: Van arkel metho...

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  9. A: Wrought iron is purest form of iron with respect to other forms. R...

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  10. A: Magnesium oxide is used for the lining in stoel making furnace . R...

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  11. A: Aluminium metal is used as a reducing agent for the extraction of m...

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  12. STATEMENT-1 : Zinc and not copper is used in the recovery of silver fr...

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  13. A: Hydrometallurgy is used for extraction of Ag and Au. R: Hydrometal...

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  14. A: Pure silver is obtained by electrolysis of AgNO3 solution R: In el...

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  15. A:Carbon is used in blast furnace for reuction of Fe2O3 B:This process...

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  16. A:In Hall process Aluminium is purified. B:Al2O3(aq)is used in Hall pr...

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