MCQ
Which one of the following metals cannot evolve $\ce{H_2}$ from acids or $\ce{H_2O}$ or from its compounds?
- ✓$\text{Hg}$
- B$\text{Al}$
- C$\text{Pb}$
- D$\text{Fe}$
✓
Answer
Correct option: A.
$\text{Hg}$
$\text{Hg}$ has greater reduction potential than that of $H^+$ and hence cannot displace hydrogen from acid.
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