What is trailing of mercury?
GeneralClass 10CBSEAnswered 28 May 2026
Answer
Trailing (or tailing) of mercury refers to the phenomenon where small droplets of mercury are left behind as a streak or trail when liquid mercury rolls or flows across a surface.
- Mercury is heavy with high surface tension forms spherical droplets.
- On glass or smooth surfaces, it can leave behind tiny mercury deposits as it moves.
- Observed in laboratory settings with thermometers, barometers, and manometers.
Safety concern: Mercury is highly toxic even tiny droplets can vaporize and cause mercury poisoning through inhalation.
Trailing of mercury refers to the thin streaks of mercury left behind when liquid mercury moves across a surface a phenomenon with important safety implications due to mercury's toxicity.
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