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Physics, Chemistry and Biology: Post your doubts here!

The answer is D because the solution is concentrated. It has OH- AND H ions too. H being less reactive than sodium gets deposited on the cathode thus it is colourless. At the anode , purple colour is formed due to the presence of an indicator.
- sanya ahuja
- Post #5,646
- Nov 18, 2013
- Forum: O-Levels / GCSEs / IGCSE

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