Electrochemistry - Electrolysis, Batteries, Corrosion

Grade 12 Chemistry — Electrochemistry - Electrolysis, Batteries, Corrosion: 25 practice questions with instant scoring and explanations.

1. Electrolysis is a:
2. In electrolysis, anode is:
3. In electrolysis of dilute H₂SO₄, H⁺ is reduced at cathode forming:
4. In electrolysis of dilute H₂SO₄, OH⁻ is oxidized at anode forming:
5. Faraday's first law of electrolysis states:
6. Faraday's second law of electrolysis states:
7. For electroplating of copper, the anode is:
8. For electrorefining of copper, impure Cu is used as:
9. A primary cell is one that:
10. A secondary cell is one that:
11. The lead-acid battery has EMF of approximately:
12. A 12 V car battery contains:
13. In a Ni-Cd battery, the anode material is:
14. Corrosion is electrochemical oxidation of:
15. Rusting of iron is an example of:
16. In rusting of iron, iron acts as:
17. Cathodic protection is a method where:
18. A sacrificial anode in cathodic protection is made of:
19. The electrochemical equivalent is defined as:
20. Amount of substance deposited = (Charge × E.W.) / (F), where E.W. is:
21. In electroplating, if 5 ampere is passed for 30 minutes through CuSO₄, moles of Cu deposited =:
22. The quantity of electricity (Q) = I × t where I is in:
23. Protection of iron from rusting can be done by:
24. The E.W. of a substance is related to atomic mass by:
25. In Hall's process, impure copper is purified by: