1. The density of carbon dioxide is 1.8 kg/m3. So, the volume occupied by 5.4 kg of carbon dioxide is   3 m3   0.3 m3   None of these   9.7 m3   Hint Half-n-half Clue   2. The density of water is about 100 kg/m3 at room temperature.   True   False   3. Water has the maximum density at   -4oC   0oC   40oC   4oC   Half-n-half Clue   4. Which of the following statements is true?   Water floats on oil because water is more dense than oil.   Water floats on oil because water is less dense than oil.   Oil floats on water because oil is more dense than water.   Oil floats on water because oil is less dense than water.   Half-n-half Clue   5. The SI unit of density is   kg/m3   m3/kg   g/cm3   cm3/g   Half-n-half Clue   6. The density of air is about 1 g/cm3 at room temperature and atmospheric pressure.   True   False   7. One kg of air is compressed from 1 m3 to 0.5 m3. Which of the following statements is true?   The density is halved.   The mass is halved.   The mass is doubled.   The density is doubled.   Half-n-half Clue