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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 student took Cu, Al, Fe and Zn strips separately in four test tubes labelled I, II, III and IV. He added 10 mL of freshly prepared ferrous sulphate solution to each test tube as shown below. In which test tubes black residue would be obtained?

    Answer:

                    In test tubes II and IV. Al and Zn are more reactive than Fe, thus they displace iron (black residue) from ferrous sulphate solution.


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