Class 8 Science MCQ Chapter 14 Chemical Effects Of Electric Current Solutions in English Medium, Class 8 Science Multiple Choice Question Answer in English to each chapter is provided in the list so that you can easily browse throughout different chapters Class 8 Science MCQ Chapter 14 Chemical Effects Of Electric Current Notes and select need one.
Class 8 Science MCQ Chapter 14 Chemical Effects Of Electric Current
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Chemical Effects Of Electric Current
Chapter – 14
| MCQ |
1. Which of the following is a bad conductor of electricity?
(a) Distilled water.
(b) Silver nitrate.
(c) Sulphuric acid.
(d) Copper sulphate.
Ans: (a) Distilled water.
2. Which of the following does not conduct electricity?
(a) Sugar solution.
(b) Vinegar solution.
(c) Lemon juice solution.
(d) Caustic soda solution.
Ans: (a) Sugar solution.
3. An electric current can produce.
(a) Heating effect.
(b) Chemical effect.
(c) Magnetic effect.
(d) all of these.
Ans: (d) all of these.
4. Pure or distilled water is a:
(a) Poor conductor.
(b) Good conductor.
(c) Both (a) and (b).
(d) None of these.
Ans: (a) poor conductor.
5. Which of the following is a good conductor?
(a) Brick.
(b) Steel.
(c) Plastic.
(d) Cotton.
Ans: (b) Steel.
6. Polythene is:
(a) a conductor.
(b) An insulator.
(c) Both (a) and (b).
(d) None of these.
Ans: (b) an insulator.
7. Electroplating is based on.
(a) Heating effect of electricity.
(b) Chemical effect of electricity.
(c) Physical effect of electricity.
(d) Magnetic effect of electricity.
Ans: (b) Chemical effect of electricity.
8. Copper is.
(a) a good conductor.
(b) an insulator.
(c) both (a) and (b).
(d) none of these.
Ans: (a) a good conductor.
9. Waste from an electroplating factory must be disposed off:
(a) In the nearby river.
(b) In the nearby pond.
(c) In the nearby cornfield.
(d) According to the disposal guidelines of Waste Management Bodies.
Ans: (d) according to the disposal guidelines of Waste Management Bodies.
10. An electrolyte is:
(a) a metal.
(b) a liquid that conducts current.
(c) a non-metal.
(d) none of these.
Ans: (b) a liquid that conducts current.
11. Flow of electron is called:
(a) electrolyte.
(b) Electroplating.
(c) Electrodes.
(d) Electric current.
Ans: (d) electric current.
12. Which is not a nonelectrolyte?
(a) Ethyl alcohol.
(b) Sodium chloride.
(c) Urea.
(d) Sodium solution.
Ans: (b) Sodium chloride.
13. An electric lamp glows due to:
(a) Heating effect.
(b) Magnetic effect.
(c) Chemical effect.
(d) Physical effect.
Answer: (a) heating effect.
14. Electroplating prevents.
(a) Corrosion.
(b) Passing of current.
(c) Dissociation.
(d) Shining.
Ans: (a) corrosion.
15. Which of the following is not used for electroplating metal articles?
(a) Nickel.
(b) Silver.
(c) Chromium.
(d) Sodium.
Ans: (d) Sodium.
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