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      Question

      A spherical ball made of steel when dropped in mercury

      container will –
      A sink in mercury Correct Answer Incorrect Answer
      B will be on the surface of mercury Correct Answer Incorrect Answer
      C will be partly immersed mercury Correct Answer Incorrect Answer
      D will dissolve in mercury Correct Answer Incorrect Answer

      Solution

      The density of steel usually ranges between 7.75 and 8.05 g/cm3 and the densityof mercuryis 13.534 g/cm3. Mercuryis denserthansteelthiswillmeanthatthebuoyant force is large enough to float the steel ball. Different materials usually have different densities, so density is an important concept regarding buoyancy, purity and packaging.

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