Things which don't dissolve in water will stay:

Which activity makes the river water dirty?

A small water body is called :

The longest river in Kerala is:

A clean looking water may contain :

What is the taste of sea water?

The best and simple method of cleaning water is:

India's longest lake is:

 If we put sugar into a glass of water it will:

During the rainy season, the level of water in a river is: