Which of the following statement is (are) not correct? (a) Metallic conduction is due to the mov...

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Which of the following statement is (are) not correct?
(a) Metallic conduction is due to the movement of electrons whereas the electrolytic conduction is due to movement of ions
(b) Both metallic and electrolytic conductions involve transfer of matter
(c) Electrolytic conduction decreases with rise in temperature
(d) Metallic conduction involves no chemical change
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