Van-Arkel method of refining Zirconium involves,
- removing all oxygen and nitrogen impurities.
- removing CO impurity
- removing Hydrogen impurity
- removing silica impurity
The Correct Option is A
Solution and Explanation
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.
Top Questions on General Principles and Processes of Isolation of Elements
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The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?
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C. I2O5 is used in the estimation of CO
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- Which of the following ore is not in oxide form?
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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