MEDIUM
8th CBSE
IMPORTANT
Earn 100

Give reasons for the following.

Distilled water is a poor conductor of electricity while water drawn from a tube well conducts electricity.

Important Questions on Chemical Effects of Electric Current

MEDIUM
8th CBSE
IMPORTANT

What does conductivity tell us about the nature of chemical substances?

MEDIUM
8th CBSE
IMPORTANT

Explain what happens when salt is added to water and free ends of electrical wires are dipped in it.

EASY
8th CBSE
IMPORTANT

Why is it dangerous to touch an electrical appliance with wet hands when in use?

MEDIUM
8th CBSE
IMPORTANT

List the changes that are seen in a solution when an electric current is passed through it.

HARD
8th CBSE
IMPORTANT

Answer the following questions in detail. 

a) With the help of an activity, explain the chemical effects caused by electric current.

HARD
8th CBSE
IMPORTANT

Describe the process by which a copper spoon can be coated with silver.

MEDIUM
8th CBSE
IMPORTANT

Give some applications of electroplating.

MEDIUM
8th CBSE
IMPORTANT
Look at the picture below and answer the following question.

Question Image

Identify the process shown in the picture.