Metal Refining Methods Quiz

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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?

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?

Pure metal gets deposited (correct)

Impure metal dissolves

Impurities collect as anode mud

Pure metal dissolves

What happens to the impurities during zone refining?

They get moved to one end of the bar and removed Signup and view all the answers

What is the purpose of the electrolyte in electrolysis?

To form a suitable salt of the metal Signup and view all the answers

What happens to the impurities when the vapours of titanium tetra iodide are decomposed in the vapour phase refining process?

They combine with iodine to form titanium tetra iodide Signup and view all the answers

Which method is used to obtain ultra-pure metals like titanium, zirconium, vanadium, and thorium?

Vapour phase refining Signup and view all the answers

Which metal is NOT mentioned as one that can be refined using electrolytic refining?

Titanium Signup and view all the answers

What is the main benefit of electrolytic refining?

Convenient method for refining a wide range of metals Signup and view all the answers

At what temperature are the metallic iodides decomposed in the vapour phase refining process?

1100°C Signup and view all the answers

Metal Refining Methods Quiz

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Questions and Answers

What is the purpose of the circular heater in the zone refining technique?

What forms the anode in electrolysis?

What happens at the cathode during electrolysis?

What happens to the impurities during zone refining?

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?

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?

What is the main benefit of electrolytic refining?

At what temperature are the metallic iodides decomposed in the vapour phase refining process?

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