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Question

Select the correct statements regarding electric conduction.


A

Happens by the movement of electrons

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B

Happens by the movement of ions

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C

Involves the transfer of matter.

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D

Does not involve the transfer of matter.

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Solution

The correct options are
B

Happens by the movement of ions


C

Involves the transfer of matter.


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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