Water

Sources #

1. Rainwater
2. Sea water
3. River water
4. Lake water
5. Underground water

Effect of Water on Rocks #

1. Dissolution
2. Hydration
3. Oxidation
4. Action of CO₂

Hardness of Water #

Characteristeric of preventing later formation of water with soap. Types:

1. Temporary
2. Permanent

Units #

Expressed in ppm as CaCO₃ 1 ppm = 1mg/l = 0.1°French = 0.07°Clark

Disadvantages #

1. Domestic Uses ^1a9b58
   1. Washing
   2. Bathing
   3. Drinking
2. Industrial Uses
   1. Textile
   2. Dyeing
   3. Sugar Industry
   4. Paper Industry
   5. Laundry
   6. Concrete Making
   7. Pharmaceutical Industry
   8. Creates problems in Boilers ^743482