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प्रश्न
Out of Cu and Ag, which is more active?
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उत्तर
Copper is more active than Ag.
संबंधित प्रश्न
Give reasons why In the electroplating of an article with silver, the electrolyte sodium argentocyanide solution is preferred over silver nitrate solution.
Give reason for the following:
For electroplating with silver, silver nitrate is not used as an electrolyte.
How is impure copper purified by electrolysis ? Explain.
List out the main applications of electrolysis.
The following question relate to the electroplating of an article with silver.
Name the electrode formed by the article which is to be plated.
Element X is a metal with valency 2. Element Y is a non-metal with valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is diatomic gas, write the equation for the direct combination of X and Y to form a compound.
(c) Write two applications of electrolysis in which anode diminish in mass.
(d) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the _____ and the Y at the ________of the electrolytic cell. (Provide the missing words).
What ions must be present in a solution used for electroplating a particular metal?
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
Draw a labelled diagram to show how iron is electroplated with copper.
What ions must be present in a solution used for electroplating a particular metal?
