Which of the following metals does not react with water to produce hydrogen?

A. Copper
B. Potassium
C. Sodium
D. Zinc

Correct Answer:

Option A – Copper

Explanation

Most alkali metals and alkaline earth metals react with water to produce hydrogen. The alkali metals comprise Group 1 of the periodic table, and include lithium, sodium, potassium, etc.

– Zinc is not much reactive with cold or room temperature water but reacts with steam to form zinc oxide and liberate hydrogen gas.

– Copper lies below hydrogen in the activity series of metals, therefore it can not displace hydrogen from water