Advertisements
Advertisements
प्रश्न
Give three applications of electrolysis.
उत्तर
Three applications of electrolysis are :
- Electroplating with metals
- Electrorefining of metals
- Extraction of metals
APPEARS IN
संबंधित प्रश्न
Give one word or phrase for the following:
Electrolytic deposition of a superior metal on a baser metal.
An electrolytic cell is set up using two platinum electrodes and an aqueous solution of copper (II) sulphate,
(a)draw a labelled diagram of the electrolytic cell,
(b)Name the ions present in the cell,
(c)Name the ions migrating towards the anode,
(d)Name the ions migrating towards the cathode,
(e)Name the ions which will not be discharged at electrodes during electrolysis,
(f)Write the reaction at the cathode,
(g)Write the reaction at the anode,
(h)Name the spectator ion in the solution.
Give reason for the following:
The blue colour of aqueous copper sulphate fades when it is electrolysed using platinum electrodes.
Give reason for the following:
For electroplating with silver, silver nitrate is not used as an electrolyte.
The following question relate to the electroplating of an article with silver.
What ions must be present in the electrolyte?
A solution of silver nitrate is a good electrolyte but is not used for electroplating an article with silver.
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
Which solution is preferred as electrolyte, CuSO4 or FeSO4?
Write two applications of electrolysis in which the anode diminishes in mass.
What ions must be present in a solution used for electroplating a particular metal?
