When a steel ball is placed on the surface of mercury, it does not sink because?

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  1. Of the surface tension of mercury
  2. Mercury is a semisolid
  3. Of the high viscosity of mercury
  4. The density of mercury is greater than that of steel

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Answer: Option 4

When a steel ball is placed on the surface of mercury, it does not sink because the density of mercury is greater than that of steel.

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