NDA2025General AbilityGeneral ScienceActual
Which one of the following is considered to be the purest source of water?
Options
- ARiver water
- BSea water
- CWell water
- DRain water
Correct answer
D. Rain water
Step-by-step solution
Rain water is considered to be the purest form of natural water. It is formed by the evaporation of surface water, which leaves behind all dissolved solid impurities. When the water vapour condenses and falls as rain, it is essentially distilled water, although it may dissolve some atmospheric gases during its fall. Answer: Rain water