Question

Metal which does not react even with steam is :

• A. potassium
• B. iron
• C. aluminium
• D. silver

Answer 1

Answer: (D)

silver

Potassium metal reacts violently with cold water to produce potassium hydroxide and hydrogen gas. This is an exothermic reaction because evolved hydrogen gas immediately catches fire.

Iron and aluminum metal do not react with cold or warm water easily but they react with steam to produce metal oxides and hydrogen gas.

Silver metal does not react with cold water as well as steam because silver metal is very stable.

Hence, option $D$ is correct.