railway RRB JE (CBT I + CBT II) Mock Test 2024 General Science Chemistry Chemical Reaction

Consider the following redox reaction:

2Cu2O (s) + Cu2S (s) → 6Cu (s) + SO2 (g)

Identify the species among the following acting as oxidant and reductant, respectively:

1
Cu(I) and S of Cu2S
2
Cu and S of SO2
3
Cu and O of SO2
4
Cu(I) and O of SO2
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