KMnO4 acts as a/an:
Correct answer: D. Oxidizing agent
- A. Reducing agent
- B. Excellent precipitating reagent
- C. Germicide
- D. Oxidizing agent
Explanation
A is incorrect as KMnO4 isnt a reducing agent.B is incorrect as KMnO4 isnt a precipitating agent.C is incorrect as KMnO4 isnt used in germicide.D is correct as KMnO4 is a strong oxidising agent,it gets reduced in the process. (fact)
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
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About Oxidation and Reduction
Oxidation involves loss of electrons, increase in oxidation number or addition of oxygen, while reduction involves electron gain, decrease in oxidation number or removal of oxygen. The topic covers oxidising and reducing agents, oxidation-number changes, redox equations and the distinction between oxidation at the anode and reduction at the cathode.
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