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In the reactivity series, which metal would be displaced from its salt solution by all of Fe, Zn and Al?
Acopper
Bpotassium
Cmagnesium
Dcalcium
Answer & Solution
Correct answer: A. copper
A metal is displaced by metals above it in the reactivity series. Cu is below Fe, Zn and Al, so all three can displace copper from CuSO₄. Mg, Ca, K are all above them.
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