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CBSE Class 10 Science Question 20 of 31

Metals and Non-metals — Question 2

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Question

Question 2

Write equation for the reaction of

  1. iron with steam
  2. calcium and potassium with water
Answer
  1. 3Fe (s) + 4H2O (g) ⟶ Fe3O4 (s) + 4H2 (g)
  2. Ca (s) + 2H2O (l) ⟶ Ca(OH)2 (aq) + H2 (g)
    2K (s) + 2H2O (l) ⟶ 2KOH (aq) + H2 (g) + heat energy