SAMPLE QUESTIONS
1. Which copper rod donates electrons to hydrogen ions , it gains ___________charge .
a) positive
b) negative
c) no charge
d) cant say
2. When current is passed through molten sodium chloride:
a) Sodium is deposited at the negative electrode and the chlorine gas is formed at the positive electrode
b) Sodium is deposited at the positive electrode and chlorine gas is formed at the negative electrode
c) Sodium is evaporated and chloride ions are formed at the negative electrode
d) Sodium is deposited at the positive electrode and chlorine is deposited at the negative electrode