TUTORIAL 10 & 11

NAME & ID

Which of the following is an example of organic compound in the groundwater composition?

• A Iron
• B Silica
• C Humic
• D Carbon dioxide

Which of the following are the main components of hard water?

• A Sodium and magnesium
• B Calcium and magnesium
• C Potassium and magnesium
• D Phosphate and magnesium

Which of the following is categorized as trace element in the groundwater?

• A Lead
• B Oxygen
• C Humic
• D Methane

What can you conclude if the outcome of groundwater analysis indicated that the concentration of nitrate and phosphate is higher than 1 mg/l?

• A There is active decomposition of dead plants and animal.
• B Contamination of groundwater due to very high salt brines.
• C There is an occurrence of weathering process of certain rock.
• D Contamination of the water has occurred from agricultural activity.

Which of the following compounds are highly responsible for the eutrophication of water bodies?

• A Iron and nitrogen
• B Phosphorous and carbon
• C Nitrogen and phosphorus
• D Potassium and phosphorus

To softened hard water, calcium and magnesium content are replaced with:

• A nitrate
• B sodium
• C sulphate
• D phosphate

Which of the following is MOST likely a source of non-point pollution of groundwater?

• A Leakage from a landfill.
• B Operational wastes from industries.
• C Discharges from wastewater treatment plants.
• D Runoff of pesticides applied to agricultural lands.

Which of the following statement is CORRECT about dispersion?

• A It happens when water drains away under the force of gravity.
• B It is the movement of water in soil which the pores are not filled to capacity with water.
• C It is the transport of a solute at a velocity equivalent to that of groundwater movement.
• D It is the mixing a solute by molecular diffusion and by variation in velocity within a porous medium.

State any FOUR (4) sources of groundwater contaminants.