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प्रश्न
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’.
उत्तर
- ‘X’ - Copper/Cu and ‘Y’ - CuO.
- The diagram represents the process of refining ‘X'.
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संबंधित प्रश्न
What is aqua-regia? Name two special metals which are insoluble in common reagents but dissolve in aqua-regia.
Name any five metals which are purified by electrolytic refining method.
Draw a neat labelled diagram.
Magnetic separation method.
Name one metal each occurring as :
A sulphine
Name one metal each occurring as :
A carbonate
\[\ce{Cu2S + 3Cu2O -> 6Cu + SO2}\]
The above process is:
Which one of the following figures correctly describes the process of electrolytic refining?
Give the formulae of the stable binary compounds that would be formed by the combination of following pairs of elements.
- Mg and N2
- Li and O2
- Al and Cl2
- K and O2
Identify the terms for the following:
The electrode where reduction takes place.
Answer the following questions with reference to the electrorefining of copper:
Write the reaction taking place at the cathode.
