1. Which of these has the lowest density?   Glass   Aluminum   Cork   Water   Hint Half-n-half Clue   2. The density of carbon dioxide is 1.8 kg/m3. So, the volume occupied by 9.0 kg of carbon dioxide is   5 m3   0.2 m3   None of these   16.2 m3   Half-n-half Clue   3. 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 density is doubled.   The mass is doubled.   Half-n-half Clue   4. Water has the maximum density at   40oC   0oC   -4oC   4oC   Half-n-half Clue   5. The density of water is about 100 kg/m3 at room temperature.   True   False   6. Density is defined as   mass × acceleration   mass × volume   volume / mass   mass / volume   Half-n-half Clue   7. The SI unit of density is   kg/m3   m3/kg   cm3/g   g/cm3   Half-n-half Clue