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10th Class Science Metals and Non-metals / धातु और अधातु Question Bank 10th CBSE Science Metals and Non-metals

  • question_answer
        A piece of granulated zinc was dropped into copper sulphate solution. After sometime, the colour of the solution changed from blue to colourless. Why?    

    Answer:

                      Blue copper sulphate is converted to colourless zinc sulphate, as zinc, being more reactive, displaces  copper from  solution.     


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