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10th Class Science Chemical Reactions and Equations Question Bank 10th CBSE Science Chemical Reactions and Equations

  • question_answer
                              What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?                            [CBSE Delhi 2010]

    Answer:

                      The incorrect statements are:         (a)Lead is getting reduced. (b)Carbon dioxide is getting oxidized. Hence, (i) is the correct answer.


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