Q

Select the option that correctly indicates which of the following statements are true. When a strip of zinc metal is placed in copper sulphate solution: (i) zinc displaces copper from copper sulphate (ii) the blue colour of copper sulphate solution does not fade (iii) a blue deposit of copper metal is formed on the zinc strip (iv) it is an example of combination reaction

RRB Group D, 29-Aug-22 S-3 2022
✓ Answer: C (i)
The reaction between zinc metal and copper sulphate solution is a classic example of a single displacement reaction. Statement (i) is True: Since zinc is more reactive than copper (higher in the reactivity series), it displaces copper from its salt solution. Chemical Equation: Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s).
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