Concept:The anode material must be able to withstand the products formed at it during electrolysis.
Explanation:In fused sodium chloride,
NaCl ionises to give
Na+ and
Cl−.
Sodium metal is produced at the cathode.
Chlorine gas,
Cl2, is produced at the anode.
The anode must not react with this chlorine gas.
Platinum is selected because it is resistant to chlorine attack.
Therefore, the platinum electrode is not corroded or consumed during the process.
This also keeps the chlorine product pure and prevents contamination of the electrolytic cell.
Answer:D. chlorine does not react with platinum.