(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Chemistry

Identify the substance underlined, in the following case

The electrolyte used for electroplating an article with silver.

Name the following :

The process of coating of iron with zinc

Name the metallic ions that should be present in the electrolyte when an article made of copper is to be electroplated with silver.

Give reasons why In the electroplating of an article with silver, the electrolyte sodium argentocyanide solution is preferred over silver nitrate solution.

State one relevant observation for the following:

At the anode when aqueous copper sulphate solution is electrolysed using copper electrodes.

Copy and complete the following table:

Choose the correct answer from the options given below:

The electrolyte used for electroplating an article with silver is

A. Silver nitrate solution

B. Silver cyanide solution

C. Sodium argentocyanide solution

D. Nickel sulfate solution

Give one word or phrase for the following:

Electrolytic deposition of a superior metal on a baser metal.

Out of Cu and Ag, which is more active?

How would you change Cu²⁺ ion to Cu?

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.

State the electrode reaction at the anode during electrolysis of:
Aqueous copper sulphate 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.

Give three applications of electrolysis.

Explain the term:

Electro refining

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.

The following question relate to the electroplating of an article with silver.
What ions must be present in the electrolyte?