In the extraction of copper from its sul...

In the extraction of copper from its sulphide ore, the metal is formed by the reduction of `Cu_2O` with

FeS

`Cu_2S`

`SO_2`

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Explain the steps for extraction of copper from its sulphide ore. Write the balanced equations involved in the process.

a. Write the balanced chemical equations for the extraction of copper metal from its ore. What is the reducing agent used? b. What is the chemical formed as green coating when copper reacts with atmospheric gases in moist conditions?

(i) Carbon cannot be used as reducing agent to obtain Mg from MgO. Why ? (ii) How is sodium obtained from molten sodium chloride ? Give equations of the reactions. (iii) How is copper obtained from its sulphide ore ? Give equations of the reactions.

Zinc is the metal which lies in the middle of the activity series. This metal is extracted from its sulphide ore. Outline the steps involved in the process of extraction of zinc metal with the help of balanced chemical equation for each step.

Give the reaction involved during the extraction of zinc from its ore by a. Roasting of zinc or b. Calcination of zinc ore OR How are roasting and calcination used in the extraction of zinc? Explain with the help of chemical equations. After these processes is reduction necessary to obtain zinc? Why

MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice Questions - Level - II

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