What are metals? And what are the electric effects of current? We all are aware that metal is a good conductor of electricity. At the same time, plastics are not the conductors of electricity. There are also many liquid conductors which become a source of electricity.
The chemical reactions can occur when the current gets passed through the chemical solutions. It consists of:
Many ways can help you to check current. These are:
Electroplating is the process of the deposition of layers. And this layer gets on the other material with the help of electroplating.
Chemical Effects of Electric Current Sample Questions for Class 8
Question 1
Chemical Effects of Electric Current Worksheet-1
Chemical Effects of Electric Current Worksheet-1
Current is the flow of:
A. Matter
B. Electrons
C. Protons
D. Charge
Question 2
When the ends of metal wire are not connected to a battery:
A. electrons move from positive electrode to negative electrode
B. electrons move from negative electrode to positive electrode
C. electrons move in random directions
D. protons move in random direction in such a way that their net movement in a unit volume is zero
Question 3
An electrolyte:
A. has positive charge
B. has negative charge
C. should be able to conduct charge without dissociating
D. should be able to form positive and negative ions
Question 4
Insulators:
A. conduct electricity
B. do not conduct electricity
C. conduct electricity only at low temperatures
D. conduct electricity at room temperature
Question 5
When an electron moves from negative electrode to positive electrode:
A. negative charge moves from negative electrode to positive electrode
B. positive charge moves from positive electrode to negative electrode
C. no charge flows from either electrode to other electrode
D. Both negative charge moves from negative electrode to positive electrode and positive charge moves from positive electrode to negative electrode