Question

Which of the following metals do not displace hydrogen $\left(H_2\right)$ from steam?

• A. Lead
• B. Potassium
• C. Calcium
• D. Zinc

Answer 1

The correct option is A Lead

Some metals react with water to form hydroxides and hydrogen gas. However, some metals do not react with water but steam to form metal oxides and hydrogen gas.

$metal+water\to metalhydroxide+hydrogengas$

$metal+steam\to metaloxide+hydrogengas$

But few metals like Pb, Cu, Hg, Ag, Au do not displace hydrogen from steam.