Which of the following can undergo both oxidation and reduction?
a) b) c) d)
b,d
a,b,d
a,d
a,b
As we learnt
Redox Couple -
It is defined as having together the oxidised and reduced forms of a substance taking part in an oxidation or reduction half reaction.
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In ,oxygen atoms have the oxidation number of -1 making it possible for to undergo both oxidation and reduction .
Similarly ,for CO, CO can be oxidised to or reduced to C.