Water Supply and Wastewater Engineering MCQs (Part-2)
What is the primary function of a pumping station in water supply systems?
A Storage
B Treatment
C Sterilize water
D Pumping
A pumping station’s main function is to move water from one location to another within a water supply system, such as from a source to a treatment plant or storage reservoir. It ensures a continuous water flow.
Which material is most commonly used in the construction of large storage reservoirs?
A PVC
B Concrete
C Copper
D Steel
Concrete is commonly used for large storage reservoirs because it is durable, cost‐effective, and can withstand the weight and pressure of large water volumes, ensuring long‐term functionality and safety.
What is the primary purpose of filtration in water treatment?
A Remove particles
B Sterilize water
C Raise temperature
D Add chemicals
Filtration in water treatment is used to remove suspended particles, debris, and microorganisms. It helps to purify the water before further chemical treatments like disinfection are applied.
What does a septic system treat?
A Greywater
B Industrial waste
C Sewage
D Stormwater
A septic system treats sewage, including solid waste and liquids, typically from individual homes. It works by allowing solids to settle and then using soil to filter and treat the wastewater.
Which water quality parameter measures the acidity or alkalinity of water?
A Turbidity
B Hardness
C pH
D Temperature
pH measures the acidity or alkalinity of water. A neutral pH of 7 is ideal for drinking water, while values below 7 are acidic and above 7 are alkaline. It is critical for water treatment and quality control.
What is the main goal of nutrient removal in wastewater treatment?
A Prevent eutrophication
B Remove solids
C Lower energy use
D Reduce odor
Nutrient removal in wastewater treatment aims to reduce nitrogen and phosphorus levels to prevent eutrophication in water bodies. Eutrophication leads to excessive algae growth, harming aquatic ecosystems and water quality.
What is a major advantage of greywater recycling?
A Enhances water taste
B Reduces water usage
C Increases wastewater volume
D Eliminates contaminants
Greywater recycling helps reduce freshwater consumption by reusing water from sources like sinks, showers, and laundry for non‐potable purposes, such as irrigation, thus conserving valuable water resources.
What does the term “desalination” refer to?
A Treatment of wastewater
B Filtration of bacteria
C Removal of salts from water
D Sterilization of water
Desalination is the process of removing salts and other impurities from seawater or brackish water to make it suitable for drinking and irrigation. It involves techniques like reverse osmosis and distillation.
Which treatment process uses chemicals to promote particle clumping?
A Coagulation
B Aeration
C Chlorination
D Filtration
Coagulation involves adding chemicals that cause tiny particles in water to clump together, forming larger particles called flocs. These can then be removed by sedimentation or filtration, improving water quality.
What is the function of a combined sewer system?
A Water treatment
B Both stormwater and wastewater collection
C Stormwater drainage
D Wastewater collection
A combined sewer system collects both stormwater and wastewater in the same pipes. These systems are typically found in older cities, but they can lead to overflow problems during heavy rainfall, resulting in untreated discharge.
Which process is used to remove suspended solids in wastewater treatment?
A Distillation
B Filtration
C Sedimentation
D Disinfection
Sedimentation allows suspended solids in water to settle at the bottom due to gravity. This process is essential in both water and wastewater treatment, helping to clarify water before further treatment steps.
What does a leakage detection system in water supply networks help with?
A Storing water
B Treating water
C Reducing demand
D Finding leaks
Leakage detection systems help identify and locate leaks in water supply networks. By detecting leaks early, these systems reduce water loss, prevent damage, and improve the efficiency of the water distribution system.
What does “sludge management” refer to in wastewater treatment?
A Separation of solids
B Disposal of sludge
C Reuse of treated water
D Treatment of water
Sludge management involves the collection, treatment, and disposal or reuse of the sludge produced in wastewater treatment. Sludge contains organic materials and must be managed properly to prevent pollution.
What is the purpose of stormwater management systems?
A Water distribution
B Control flooding
C Wastewater treatment
D Rainwater collection
Stormwater management systems are designed to handle excess rainfall, control flooding, and protect water quality by directing stormwater into appropriate drainage or retention areas for proper handling.
What is an essential feature of hydraulic modeling in water distribution systems?
A Monitor water quality
B Design pump stations
C Predict flow patterns
D Reduce water treatment cost
Hydraulic modeling is used to simulate and predict the flow patterns within a water distribution system. It helps engineers optimize pipe sizes, identify problem areas, and ensure efficient and reliable water delivery.