Question

27. Recognise the oxidised substances and reduced substance in the following reactions :
(1) 4Na(s) + O2(g) → 2NaO(s)
( 2 ) CuO(s) + H2(g) → Cu(s) + H2O(g)
(3) 2PbO(s) + C(s) 2Pb(s) + CO.(g)​

Answer 1

CuO(s)+H2(g) is correct