Which one of the following pairs of substances on reaction will not evolve H2 gas? (AIPMT 1998)

Copper is a noble metal, it lies below hydrogen in the electrochemical series. Therefore, it cannot displace hydrogen from dilute HCl. While iron and sodium lie above hydrogen in the electrochemical series, so they can liberate H2 either from steam or H2SO4 solution. 2 5 2 5 2 C H OH Na C H ONa 1/ 2H -> 2 4 4 2 2 3 4 2 Fe H SO FeSO H 3Fe 4H O Fe O 4H -> ->