10th Class Science Metals and Non-metals Question Bank 10th CBSE Science Metals and Non-metals

  • question_answer   Of the three metals X, Y and Z, X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.  [NCERT Exemplar]

    Answer:

                      X is alkali metal, Na or K. Y is alkaline earth metal, Mg or Ca. Z is Fe. Increasing reactivity series: Na > Mg > Fe.


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