1. The density of mercury is 13.6 g/cm3. So, the mass of 2 cm3 of mercury is   6 g   27.2 g   27200 g   None of these   Hint Half-n-half Clue   2. Which of the following statements is true?   Water floats on oil because water is less dense than oil.   Water floats on oil because water is more dense than oil.   Oil floats on water because oil is less dense than water.   Oil floats on water because oil is more dense than water.   Half-n-half Clue   3. A metal body of mass 216 g occupies a volume of 80 cm3. Identify the metal.   Tungsten with density = 19.4 g/cm3   Iron with density = 7.9 g/cm3   Lead with density = 11.4 g/cm3   Aluminum with density = 2.7 g/cm3   Half-n-half Clue   4. The density of air is about 1 g/cm3 at room temperature and atmospheric pressure.   True   False   5. The density of oxygen at room temperature is about 1.3 kg/m3. Therefore, its density in g/cm3 is   0.013   0.0013   1300   130   Half-n-half Clue   6. The fraction of an iceberg submerged below the water surface is   9 / 10   1 / 10   1 / 5   4 / 5   Half-n-half Clue   7. The SI unit of density is   cm3/g   g/cm3   kg/m3   m3/kg   Half-n-half Clue