Which of the following pairs will

Question.
Which of the following pairs will give displacement reactions ?

(a) NaCl solution and copper metal

(b) $\mathrm{MgCl}_{2}$ solution and aluminium metal

(c) $\mathrm{FeSO}_{4}$ solution and silver metal

(d) $\mathrm{AgNO}_{3}$ solution and copper metal.

solution:

(d) $\mathrm{AgNO}_{3}$ solution and copper metal

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