Q

Four different experiments were conducted by students of Class X. I. Navin took a beaker containing aqueous solution of CuSO4 and added a piece of magnesium strip in it. II. Ayush took a beaker containing aqueous solution of CuSO4 and added some platinum pieces in it. III. Sneha took a beaker containing aqueous solution CuSO4 and added some copper turnings in it. IV. Akriti took a beaker containing aqueous solution CuSO4 and added a piece of silver wire in it. Who among them was able to perform a displacement reaction?

RRB Group D, 25-Aug-22 S-1 2022
✓ Answer: D Navin
Navin performed a displacement reaction by adding a magnesium strip to an aqueous solution of CuSO4. Magnesium, being higher in the reactivity series, displaces copper from copper sulfate to form magnesium sulfate. Other metals like platinum, copper, and silver are less reactive than copper and cannot displace it in similar reactions.
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