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CBSE › Class 12 › Chemistry › General Principles and Processes of Isolation of Elements
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1. Impurities of sulphur, silicon and phosphorus can be removed from cast iron by adding

2. In metallurgical process, aluminium acts as

3. Ellingham diagram represents change of

4. During the extraction of haematite, limestone is added which acts as

5. In blast furnace iron oxide is reduced by

6. From the Ellingham graph between Gibb’s energy and temperature, out of C and CO with is a better reducing agent for ZnO?

7. In a thermite process is used as reducing agent.

8. Blister copper is

9. Which of the following slags is produced during extraction of iron?

10. Which of the following oxides cannot be reduced by hydrogen?

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