VICAIRE - Module 2

Qualitative Hydrology - Chapter 4

 


 

1.  Which are the components of water disperse system?
dissolved substances, dissolved gases, radioactive components
dissolved and not dissolved substances, gases, microorganisms
dissolved and not dissolved substances, gases, microorganisms, radioactive components

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2.  Which anions and cations form the ionic composition of river waters?
HCO3-, SO42-, Fe, Cl, Na
HCO3-, SO42-, Cl-, Ca2+, Mg2+, Na+ (K+)
Ca2+, Mg2+, SO42-, Cl, Na, HCO3-

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3.  Which of the following answers contains all the factors that form the quality of waters?
climate, vegetation, rockstructure, soils, aquatic organism
precipitation and temperature, forest vegetation, rocks and soil
precipitation and temperature of the air, soil and plant cover, rocks, vital activity of water organisms

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4.  Which of the following processes describe the interaction between rocks and sheet flow?
dissolving, hydrolysis
diffusion and convective transportation
bioaccumulation, settling

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5.  In which of the following cases waters in rivers have the lowest mineralization?
if rainfalls and subsurface waters predominate
if snow and glacial feeders predominate
if snowfalls and rainfalls predominates and a great amount of subsurface waters

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6.  Which of the chemical processes is decisive for the pH of river waters and respectively for their quality?
hydrolysis
sorption
oxidation-reduction processes

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7.  What is the role of the phytoplancton for the formation of quality of waters?
source of not organic substance and CO2
source of organic matter and O2
source of the basic anions and cations

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Answers