Hydrosphere
What is chemical formula of water?
H2SO4
H2O
H2S
H2
H2O
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What is percentage of S, Ca and K ?A. 0.02
B. 0.03
C. 0.07
D. 0.08
Which water can be consumed by humans?
A. Ocean water
B. Sea water
C. Fresh water
D. Marine water
Which three elements constitute 90% of sea water?
A. Cl, Na, Mg
B. S, Ca, K
C. Cl, S, Si
D. C, K, O
Chloride and sulphate of sodium, considers to be a most common
A. Chemicals
B. Salts
C. Sulphates
D. ingredient
In which state water is in its purest form?
A. Evaporation state
B. Solid state
C. Liquid state
D. Gas State
What causes gases to dissolve in atmosphere?
A. Transpiration
B. Precipitation
C. Condensation
D. Filtration
Which cation is dominating in seawater?
A. K
B. Ca
C. Na
D. Mg
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