What is the most abundent compound on earth? write its formula.
What is the source of ground water?
Is water lost when it is used?
Most abundant compound on earth is silicon dioxide, whose molecular formula is (SiO2).
The sources of ground water are: infiltration from Lake, Sea, Stream, Rain, Moisture (after condensation), Dew drop etc. During volcanic activity, the gaseous evolution contains water vapour also, which condenses and stored as ground water.
When water is consumed then it is either reproduced / mixed with something else, then total amount of water is same. But if water reacts and produces new compounds or dissociated to constituent elements then total amount of water is reduced.
The sources of ground water are: infiltration from Lake, Sea, Stream, Rain, Moisture (after condensation), Dew drop etc. During volcanic activity, the gaseous evolution contains water vapour also, which condenses and stored as ground water.
When water is consumed then it is either reproduced / mixed with something else, then total amount of water is same. But if water reacts and produces new compounds or dissociated to constituent elements then total amount of water is reduced.