9. Give reasons for the following III

1. Sea water is unfit for drinking.

 

 

There is a lot of  in the water, which makes you feel nauseous. There are \(3.5\) grams\(35\) grams\(4.5\) grams\(45\) grams of dissolved salts in every litre of saltwater, the most common of which is sodium hydroxidesodium carbonatepotash alumsodium chloride. Such water is also called saline waterpotable water. It is said to be non-potable potable water water because it is not suitable for drinking.

2. Hard water is not good for washing utensils.

  

 

Hard water makes tastelessdamages and forms a thin layerhard layer on the utensils and containers in which it is stored.