Methane reacts with copper oxide.
The equation for the reaction is shown.
$4CuO{\rm{ }} + {\rm{ }}C{H_4} \to 4Cu{\rm{ }} + {\rm{ }}C{O_2} + 2{H_2}O$
Which statement about this reaction is correct?
1 )
Carbon is reduced.
2 )
Copper oxide is oxidised.
It is a redox reaction.
4 )
Methane is reduced.
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