1. Water exerts pressure on the walls and the bottom of the container in which it is placed.   True   False   2. Conversion of water into water vapor is known as   Vaporization   Boiling   Freezing   Condensation   Hint Half-n-half Clue   3. It is easy to make lather with hard water.   True   False   4. Objects appear to weigh less in water than air.   True   False   5. What is the boiling point of water?   0 oC   32 oC   50 oC   100 oC   Half-n-half Clue   6. Hardness of water is caused by the presence of certain salts in it.   True   False   7. Most of the pure, drinkable water of the earth is in form of   Icebergs   Vapor and Clouds   Spring and River water   Water in the Oceans   Half-n-half Clue