1. What happens when a compass needle is brought near a current carrying wire?
2. Fill in the blanks: The bulb glows when electric current passes through it because of ___________ effect of electric current.
3. Choose the correct option:
During electroplating, the object to be electroplated is made _________.
1. cathode
2. anode
3. Electrolyte
4. None of these
4. State True or False: Adding lemon in water,makes it a good conductor of electricity. 1. true
2. false
5. Sometimes we see that the liquid is conducting but the bulb may not glow. Why?
6. The chemical reaction brought about by an electric current may produce changes in the colour of the solutions.
1. True
2. false
7. Choose the correct option: Electrolytes conduct electricity due to the movement of _________.
1. electrodes
2. atoms
3. ions
4. None of these
8. Choose the correct option: An electrolyte is ___________. 1. a metal
2. a solution
3. a liquid that conducts current
4. None of these
9. Fill in the blanks: Electroplating is used to give more ___________ to the cheap objects.
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