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प्रश्न
Draw a neat labelled diagram.
Electrolytic reduction of alumina.
उत्तर
Electrolytic reduction of alumina-
संबंधित प्रश्न
What is aqua-regia? Name two special metals which are insoluble in common reagents but dissolve in aqua-regia.
What is meant by refining of a metal? Name the most widely used method for the refining of impure metals obtained by various reduction processes. Describe this method with the help of a labelled diagram by taking the example of any metal.
Explain how the following metals are obtained from their compounds by the reduction process:
(i) Metal M which is in the middle of the reactivity series.
(ii) Metal N which is high up in the reactivity series.
Give one example of each type
Draw a neat labelled diagram.
Froth floatation method.
Draw a neat labelled diagram.
Hydraulic separation method.
Name one metal each occurring as :
A sulphine
Name one metal each occurring as :
A carbonate
Name one metal each occurring as :
An oxide
Electrolysis is used to obtain pure metal from impure metal.
The lightest liquid metal is ____________.
\[\ce{Cu2S + 3Cu2O -> 6Cu + SO2}\]
The above process is:
During electrolytic refining of zinc, it gets
Which one of the following figures correctly describes the process of electrolytic refining?
Identify the terms for the following:
The electrode where reduction takes place.
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 question with reference to the electrorefining of copper:
What is the anode made of?
Answer the following question with reference to the electrorefining of copper:
What do you observe at the cathode?
Answer the following questions with reference to the electrorefining of copper:
Write the reaction taking place at the cathode.
