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NARAYNA-METALLURGY-EXERCISE-1 (HOME WORK)(EXTRACTION OF METALS)
- Heating pyrites in air to remove sulphur dioxide is known as
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- Roasting is carried out in case of:
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- An ore after levigation is found to have basic impurities. Which of th...
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- Which of the following processes involves smelting ?
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- The process of bringing the metal or its ore into solution by the acti...
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- The extraction of which of the following metals involves bassemerisati...
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- Which of the following statements is correct regrading the slag obtain...
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- Which is the strongest reducing agent?
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- The process in which the ore is heated in excess of air below its metl...
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- Which of the following metals are extracted by electrolytic reduction?
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- Cryolite is:
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- The least stable oxide at room temperature is
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- The oxidation state of Fe in Fe(3)O(8) is
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- The iron obtained from the blast furnace is called:
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- Which of the following elements contitutes a major impurity in pig iro...
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- In the course of a chemical reaction an oxidant -
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