Zinc + _______ → Zinc oxide.
Cold water
Hot water
Steam
Chlorine gas.
Zinc reacts with only steam as it is not extremely high in the reactivity series.
Why is granulated zinc and not the pure zinc used for the preparation of hydrogen gas in laboratory?
Zinc dissolves in sodium hydroxide to form zinc hydroxide and hydrogen gas.
Zinc reacts with concentrated sulphuric acid to form zinc hydride and sulphide gas.