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The pair(s) which will show displacement reaction is/are

(i) NaCl solution and copper metal

(ii) AgNO3 solution and copper metal

(iii) Al2(SO4)3 solution and magnesium metal

(iv) ZnSO4 solution and iron metal

  1. (ii) only
  2. (ii) and (iii)
  3. (iii) and (iv)
  4. (i) and (ii)

Chemical Reaction

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Answer

(ii) and (iii)

Reason — AgNO3 solution and copper metal will give displacement reaction where copper being more reactive than silver, displaces it from silver nitrate . Similarly, Al2(SO4)3 solution and magnesium metal will give displacement reaction where magnesium being more reactive than aluminium, displaces it from aluminium sulphate.

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