Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 General Science Chemistry

Which of the following reactions is NOT an example of a displacement reaction?

1
Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
2
Pb(s) + CuCl2(aq) → PbCl2(aq) + Cu(s)
3
2AgBr(s) \(\rm \xrightarrow{Sunlight}\) 2Ag(s) + Br2(g)
4
Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
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