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CBSE Class 10 Science Question 1 of 31

Metals and Non-metals — Question 1

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Question

Questions 1

Which of the following pairs will give displacement reactions?

  1. NaCl solution and copper metal
  2. MgCl2 solution and aluminium metal
  3. FeSO4 solution and silver metal
  4. AgNO3 solution and copper metal.
Answer

AgNO3 solution and copper

Reason — In reactivity series, Na is above Cu, Mg is above Al and Fe is above Ag so displacement reaction does not occur in these pairs. Ag is below Cu, hence only AgNO3 solution and copper metal will give displacement reaction.