NCERT Exemplar XVI — task. Science CBSE, Class 10.

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1. Which of the following can undergo a chemical reaction?

\(ZnSO_4+Fe\)
\(CuSO_4+Fe\)
\(MgSO_4+Fe\)
\(MgSO_4+Pb\)

2. Which one of the following figures correctly describes the process of electrolytic refining?

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