Question

Rain is the ultimate source of water.

A. True

B. False

Answer 1

Water is a vital natural resource which forms the basis of all life. The source which is not limited or restricted to some numbers or the quality of the source.

Complete Answer:

The ultimate source of water is the water bodies which are present on earth which includes large oceans, seas, rivers, etc. Rain is only the way of water returning to their sources, which they have lost by evaporation. This rain is not an ultimate source of water .the ultimate source are the water bodies present on earth, example large oceans, rivers etc.

Rain is stored in clouds, which are huge, dense masses of water molecules. It gets there because it evaporates off the earth, into the clouds. Rain isn’t a source of water, it’s one of the stages of the life cycle of water.

The correct option is B i.e. False.

Additional information: Rain water during its passage towards ground takes these materials like $CO_2$, $N_2$, $O_2$, $NH_3$, mists, pollens, dust, microorganisms and radioactive substances to ground with it.

• The water becomes acidic in nature when it comes in contact with atmospheric $CO_2$. Further the gaseous Sulphur($SO_2$) and Nitrogen($NO_2$, $N_{2}O$, $N_{2}O_{2}$) oxides when reacts with atmospheric water, forms dilute solution of sulphuric and nitric acid and these leads to Acid rains & changes the surface water quality.

• Acid rain causes damage to vegetation, living organisms, soil and aquatic fauna & thus affects ecology.

Note: Plumbo-solvent action- When acidic water passes through lead pipelines, it dissolves some amount of the lead. This action of acidic water is referred to as plumbo-solvent action. Such water consumed for a long period may prove injurious to health.