Multiple choice general knowledge

the metal mercury

  1. is the hardest known metal

  2. is a liquid at room temperature

  3. is highly radioactive

  4. is extensively used in aircraft construction
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mercury is unique among metals: it exists as a liquid at standard temperature and pressure (room temperature). It's not the hardest metal (that's diamond on the Mohs scale), not highly radioactive, and not used in aircraft construction (it's too heavy and toxic).

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