1. Conversion of water into water vapor is known as   Vaporization   Boiling   Freezing   Condensation   Hint Half-n-half Clue   2. Water in solid form is known as   Ice   Soda   Crystal   Dry Ice   Half-n-half Clue   3. Water at room temperature is a   Liquid   Solid   Gas   Plasma   Half-n-half Clue   4. Water which is absolutely pure and free from any impurity is known as   Distilled Water   Mineral Water   Spring Water   Boiled Water   Half-n-half Clue   5. What is formed when hydrogen burns in oxygen?   Water   Carbon Dioxide   Hydrogen Peroxide   Carbon Monoxide   Half-n-half Clue   6. Chlorine is added to drinking water to kill microbes that cause illness. This is known as   Chlorination   Elimination   Microbe Termination   Vaporization   Half-n-half Clue   7. Hardness of water is caused by the presence of certain salts in it.   True   False