Question

Which of the following metal reacts with steam or acid to produce hydrogen gas?

• A. Zinc
• B. Platinum
• C. Silver
• D. Gold

Answer 1

The correct option is A

Zinc

Explanation for the correct option -

Option (a) Zinc

• According to the activity series Zinc (Zn) and Iron (Fe) react with steam or acid to produce hydrogen gas and corresponding salt.

$$\begin{gathered} \mathrm{Zn}\left(\mathrm{s}\right)+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)\to \mathrm{Zn}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)(\uparrow ) \\ \mathrm{Zinc}\mathrm{Steam}\mathrm{Zinc}\mathrm{hydroxide}\mathrm{Hydrogen} \end{gathered}$$

Explanation for the incorrect option -

Option (b) Platinum - This is non-reactive metal.

Option (c) Silver -This is non-reactive metal.

Option (d) Gold -This is non-reactive metal.

Therefore, option (a) Zinc is the correct answer.