chemical effects of electric current Class 8

Front

The object to be electroplated is taken as ____________ electrode.

Back

cathode

Front

Which metal is commonly used in electroplating to make objects appear shining?

Back

Chromium

Front

Which of the following is not used for electroplating metal articles?

Back

sodium

Front

Electroplating prevents __________.

Back

rusting

Front

What is electroplating?

Back

A process that uses electric current to reduce dissolved metal cations so that they form a coherent metal coating on an electrode.

Front

What is the role of the anode in electroplating?

Back

The anode is the electrode where oxidation occurs, and it typically dissolves to provide metal ions for the plating process.

Front

What happens to the cathode during electroplating?

Back

The cathode gains metal ions from the solution and becomes coated with the metal.

Front

Why is chromium used in electroplating?

Back

Chromium is used because it provides a shiny finish and protects against corrosion.

Front

What is the effect of adding salt to water in terms of conductivity?

Back

Adding salt increases the conductivity of water by providing ions that carry electric current.

Front

Is pure water a good conductor of electricity?

Back

No, pure water is a poor conductor of electricity.