Chemical Effects of Electric Current Class 8 MCQs Questions with Answers

1. Which of the following is a bad conductor of electricity?

2. Pure or distilled water is a

3. Flow of electron is called

4. In LEDs, the longer lead (wire) is always connected to the _______ terminal

5. Which is not a non-electrolyte?

6. Which of the following does not conduct electricity?

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

8. Copper is

9. Tap water is a good conductor of electricity while distilled water is not because

10. When electrodes are immersed in water and electricity passed, the bubbles formed on the positive terminal is actually _______ gas.

11. Which of the following is a good conductor?

12. An electric lamp glows due to

13. Waste from an electroplating factory must be disposed off

14. An electrolyte is

15. Electroplating is based on

16. An electric current can produce

17. Polythene is

18. Iron objects can be protected by electroplating them with

19. When electrodes are immersed in water and electricity passed, the bubbles formed on the negative terminal is actually _______ gas.

20. Electroplating prevents