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Questions and Answers
What is the purpose of the circular heater in the zone refining technique?
What is the purpose of the circular heater in the zone refining technique?
- To crystallize out the pure metal (correct)
- To cool the impure molten metal
- To create impurities in the molten metal
- To move the impurities to one end of the bar
What forms the anode in electrolysis?
What forms the anode in electrolysis?
- Thick plates of pure metal
- Thin sheets of pure metal
- Thin sheets of impure metal
- Thick plates of impure metal (correct)
What happens at the cathode during electrolysis?
What happens at the cathode during electrolysis?
- Pure metal gets deposited (correct)
- Impure metal dissolves
- Impurities collect as anode mud
- Pure metal dissolves
What happens to the impurities during zone refining?
What happens to the impurities during zone refining?
What is the purpose of the electrolyte in electrolysis?
What is the purpose of the electrolyte in electrolysis?
What happens to the impurities when the vapours of titanium tetra iodide are decomposed in the vapour phase refining process?
What happens to the impurities when the vapours of titanium tetra iodide are decomposed in the vapour phase refining process?
Which method is used to obtain ultra-pure metals like titanium, zirconium, vanadium, and thorium?
Which method is used to obtain ultra-pure metals like titanium, zirconium, vanadium, and thorium?
Which metal is NOT mentioned as one that can be refined using electrolytic refining?
Which metal is NOT mentioned as one that can be refined using electrolytic refining?
What is the main benefit of electrolytic refining?
What is the main benefit of electrolytic refining?
At what temperature are the metallic iodides decomposed in the vapour phase refining process?
At what temperature are the metallic iodides decomposed in the vapour phase refining process?
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