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Question

Select the correct statements regarding electric conduction.

A
Involves the transfer of molecules
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B
Happens by the movement of electrons
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C
Happens by the movement of ions
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D
Does not involve the transfer of matter.
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Solution

The correct option is C Happens by the movement of ions

Electric conduction happens by the movement of ions, hence it involves the transfer of matter (ions in this case).

Example: Electrolysis of lead bromide

PbBr2 Pb2++2Br

Lead ions move towards cathode (-ve electrode) and Bromide ions move towards (+ electrode) anode leading to electric conduction.


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