NCERT Solutions for Class 8 Science Chapter 14
Important NCERT Questions
8th Chapter 14 Chemical Effects of Electric Current
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 12
The process that you saw in Activity 14.7 is used for purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of battery and why?
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Impure Copper plate should be connected to positive terminal. Pure copper plate should be connected to negative terminal of electrode as copper ions are positively charged and will attract to negative electrode terminal.
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