Water from lakes, rivers, and seas does not vaporize rapidly.

Explain why : Rivers and lakes do not freeze easily?

Assertion: Water waves in a river are not polarized. Reason: Water waves are longitudinal in nature.

Blue colour of water in sea is due to

Statement (S). Marine lampreys migrate to rivers for spawning Reason (R). Marine lampreys return to sea water after spawning

River water deposits

The pH of water smaple collected from a river was found to be acidic in the range of 3.5-4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most cause for lowering the pH of river water ?

Waste water can be passed into rivers after

If water sample are taken from sea, rivers or lake, they will be found to contain hydrogen and oxygen in the approximate ratio of 1 : 8 . This indicates the law of :

If water sample are taken from sea, rivers or lake, they will be found to contain hydrogen and oxygen in the approximate ratio of 1 : 8 . This indicates the law of :

Desalination of sea water can be done by