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- 1. Multiple Choice
1.An electric current can produce
heating effect only.
chemical effect only.
magnetic effect only.
chemical, heating, and magnetic effects.
- 2. Multiple Choice
When an electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates
the chemical effect of current.
the heating effect of current.
the magnetic effect of current.
the lightning effect of current.
- 3. Multiple Choice
Which one of the following solutions will not conduct electricity?
lemon juice
vinegar
tap water
vegetable oil
- 4. Multiple Choice
The object to be electroplated is taken as ____________ electrode.
cathode
anode
electrode
none of these
- 5. Multiple Choice
Small amount of a mineral salt present naturally in water makes it a______________ of electricity.
insulator
conductor
both a and b
none of these
- 6. Multiple Choice
Electroplating is based on
Chemical effect of electricity
Magnetic effect of electricity
Heating effect of electricity
Physical effect of electricity
- 7. Multiple Choice
An electrolyte is
a metal
a solution
a liquid that conducts current
all of above
- 8. Multiple Choice
Flow of electron is called
Electroplating
Electric current
Electrodes
Electrolyte
- 9. Multiple Choice
the phenomenon of decomposition of an electrolyte when electricity is passed through is known as
conduction
coating
electrolysis
electrorefining
- 10. Multiple Choice
the electrode connected to the negative terminal of a battery is known as
anode
negative pole
cathode
electrolyte
- 11. Multiple Choice
electrolyte that ionise completely to form free mobile ions in the solution is known as
strong electrolytes
weak electrolytes
cathode
anode
- 12. Multiple Choice
conductors can allow electricity because of the presence of
free ions
free electrons
free protons
atoms
- 13. Multiple Choice
sea water is an example of
bad conductor
strong electrolyte
weak electrolyte
none of these
- 14. Multiple Choice
which of the following is an application of electroplating.
Electrorefining of metal
extraction of metals from its ores
to minimize the cost
none of these
- 15. Multiple Choice
the method of purification of metals by using electricity is known as
electroplating
electrorefining
electrometal
none of these
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