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प्रश्न
Answer the following question with reference to the electrorefining of copper:
What do you observe at the cathode?
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उत्तर
Pure copper is deposited on the thin sheet of pure copper placed at the cathode.
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संबंधित प्रश्न
Name one method for the refining of metals.
How are metals refined by the electrolytic process?
Draw a neat labelled diagram.
Froth floatation method.
Draw a neat labelled diagram.
Electrolytic reduction of alumina.
Electrolysis is used to obtain pure metal from impure metal.
In the electrolytic refining of copper, the electrolyte used is:
An electrolytic cell consists of
- positively charged cathode
- negatively charged anode
- positively charged anode
- negatively charged cathode
Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?
A reddish-brown metal ‘X’, when heated in air, gives a black compound ‘Y’, which when heated in the presence of H2 gas gives ‘X’ back. ‘X’ is refined by the process of electrolysis; this refined form of ‘X’ is used in electrical wiring. Identify ‘X’ and ‘Y’. Draw a well-labelled diagram to represent the process of refining ‘X’.
Answer the following questions with reference to the electrorefining of copper:
Write the reaction taking place at the cathode.
