Question:
Van-Arkel method of refining Zirconium involves,
Van-Arkel method of refining Zirconium involves,
Updated On: Apr 2, 2024
- removing all oxygen and nitrogen impurities.
- removing CO impurity
- removing Hydrogen impurity
- removing silica impurity
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The Correct Option is A
Solution and Explanation
The van-Arkel method of refining zirconium involves removal of all oxygen and nitrogen impurities.
In this method, the impure metal is heated with iodine in a sealed vessel, so that metal forms volatile metallic iodide and impurities do not react with iodine.
The metallic iodide is then decomposed when purified further at higher temperature.
In this method, the impure metal is heated with iodine in a sealed vessel, so that metal forms volatile metallic iodide and impurities do not react with iodine.
The metallic iodide is then decomposed when purified further at higher temperature.
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal