Q:
      
      
         
            
Which of the following acts both as oxidising and reducing agent?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) nitrous acid          
         
Explanation: Nitrous acid act as an oxidising agent because it oxidises potassium iodide to iodine. It is also a reducing agent because it decolourises acidified potassium permanganate solution.
Nitric acid acts only as an oxidising agent
Ammonia acts only as a reducing agent
Nitrogen peroxide acts only as an oxidising agent.
       
      
      
      
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