Multiple choice chemistry metals reaction of metals reactions of metals chemical properties of metals $Zn + H _{2}O$ (steam) $\longrightarrow A + B$In the equation, A and B are : $Zn$ and $H _2$ $ZnH _{2}$ and $O _{2}$ $ZnO _{2}$ and $H _{2}$ $ZnO$ and $H _{2}$ Reveal answer Fill a bubble to check yourself D Correct answer Explanation Zinc only when heated replaces hydrogen from steam thus forming oxides.$Zn(s) +H _{2}O(g) \xrightarrow[\text{Above}\; 400^oC]{\Delta} ZnO(s)+H _2(g)$ . Thus, the compounds A and B are $ZnO$ and $H _2$.