The minerals present in water may be in the form of ……….
a) bicarbonate of sodium
b) carbonates
c) potassium
d) all of these
Water:
Occurrence of water:-
.
It has been estimated that total amount of water present on the earth is about ………. billion cubic kilometer.
a) 1.33
b) 1.22
c) 1.44
d) 1.55
Water cover about ………. of the earth’s surface.
a) 60%
b) 70%
c) 80%
d) 90%
The ocean contains more than ……….
a) 95%
b) 96%
c) 97%
d) 98%
The ………include rivers, lakes, lakes canals, streams and soil moisture.
a) inland water
b) snow
c) underground water
d) rain
