Which one of the following pairs of substances on reaction will not evolve H2 gas?
A. Copper and HCl (aqueous)
B. Sodium and ethyl alcohol
C. Iron and steam
D. Iron and H2SO4 (aqueous)
Answer:C
Which one of the following pairs of substances on reaction will not evolve H2 gas?
A. Copper and HCl (aqueous) B. Sodium and ethyl alcohol C. Iron and steam D. Iron and H2SO4 (aqueous)