Question

4. The density of mercury is 13.6 g/cm3. 'The copper cylinder sinks in mercury.' Is
this statement true or false? *
N
Hg
80
Mercury
True
False​

Answer 1

Since condition for sinking of a body of density σ in a liquid of density S is

σ>S.

& Since iron of density 7.69/cc is less lighter than density of mercury (density 13.6g/cc). Hence iron will float on mercury.