Multiple choice general knowledge

Mercury is a hazardous chemical. Which item does not contain mercury?

  1. Computer disks

  2. Blinking lights in sneakers

  3. Fluorescent light bulbs

  4. Thermometers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mercury is commonly found in fluorescent bulbs (as vapor), older thermometers (liquid metal), and specialized footwear like vintage 'LA Gear' light-up sneakers (mercury switches). Computer disks (floppy or hard drives) are primarily made of magnetic materials, plastics, and aluminum, and do not contain mercury.

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