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Waste Water Engineering Multiple Choice Questions | MCQs | Quiz

Waste Water Engineering Interview Questions and Answers
Practice Waste Water Engineering questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Sewage Disposal
•   Water Carriage System
•   Dry Weather Flow
•   Minimum Velocity Flow
•   Sewer Sections
•   Sewer System Planning
•   Sewer Appurtenances
•   Pump & Pumping Station-1
•   Pump & Pumping Station-2
•   Valves Different Types
•   Autoclaves
•   Blowers
•   ↓ Characteristics ↓
•   Wastewater - 1
•   Wastewater - 2
•   Chemical Determination
•   Chemical Reactions
•   Mass Transfer Correlation
•   Oxygen Sag Analysis
•   Streams Self Purification
•   Land Treatment Disposal
•   Unit Operation & Processes
•   Reactors Types - 1
•   Reactors Types - 2
•   Wastewater Treatment - 1
•   Wastewater Treatment - 2
•   Sludge Processing - 1
•   Sludge Processing - 2
•   Screens & Comminutors - 1
•   Screens & Comminutors - 2
•   Aerated Grit Chambers
•   Discrete Particles Settling
•   Settling Tank Types
•   Sedimentation Tanks - 1
•   Sedimentation Tanks - 2
•   Chemical Clarification - 1
•   Chemical Clarification - 2
•   Flocculant Settling
•   Sewage Filters
•   Sand Filters - 1
•   Sand Filters - 2
•   Trickling Filters - 1
•   Trickling Filters - 2
•   High Rate Filtration
•   Secondary Clarifiers - 1
•   Secondary Clarifiers - 2
•   Tube Settlers
•   Activated Sludge Process-1
•   Activated Sludge Process-2
•   Diffused Aeration Systems
•   Sludge Production
•   ↓ Treatment Systems ↓
•   Activated Sludge - 1
•   Activated Sludge - 2
•   Secondary Settling
•   Oxidation Ditch
•   Aerobic Ponds
•   Facultative Ponds
•   BOD Removal Methods
•   Moving Bed Bioreactor
•   Moving Bed Reactor
•   Sludge Treatment Process1
•   Sludge Treatment Process2
•   Sludge Characteristics - 1
•   Sludge Characteristics - 2
•   Anaerobic Digestion
•   Septic Tanks
•   Septic Tanks Disposal
•   Oil Removal Methods
•   Lamella Clarifiers
•   Dissolved Air Floatation - 1
•   Dissolved Air Floatation - 2
•   Ultrafiltration
•   Rapid Filtration
•   Disc Filtration - 1
•   Disc Filtration - 2
•   Water Treatment
•   Carbon Adsorption
•   Phosphorus Removal - 1
•   Phosphorus Removal - 2
•   Nitrogen Removal
•   Biological Nitrification
•   Ammonia Stripping
•   Wet Air Oxidation
•   UASB Reactor - 1
•   UASB Reactor - 2
•   Total Dissolved Solids - 1
•   Total Dissolved Solids - 2
•   ↓ Reverse Osmosis ↓
•   Reverse Osmosis
•   Reverse Osmosis Design
•   Membrane Properties - 1
•   Membrane Properties - 2
•   Membranes Fouling
•   ↓ Ion Exchange ↓
•   Ion Exchange Process
•   Media Properties - 1
•   Media Properties - 2
•   Ion Exchange Design
•   Softners
•   Iron & Arsenic Removal - 1
•   Iron & Arsenic Removal - 2
•   Disinfection Process - 1
•   Disinfection Process - 2
•   Chlorinators
•   ↓ Oxidation Process ↓
•   Ozonators
•   H2O2/UV
•   Industrial Wastewater
•   House Drainage Principles
•   Pipes & Traps
•   Sanitary Fittings
•   Plumbing Systems
•   House Drainage Plans
•   Hydrogen Sulphide-Sewers
•   Storm Water Flow
•   Rural Sanitation
•   Dry Refuse Collection
•   Excretal Wastes Disposal
•   Eco-Friendly Toilets
•   Water Conduits Control
•   Water Treatment Plant

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Waste Water Engineering Questions and Answers – Ultrafiltration

Posted on July 24, 2018 by Manish

This set of Waste Water Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Ultrafiltration”.

1. Ultrafiltration is different from membrane filtration.
a) True
b) False
View Answer

Answer: b
Explanation: In ultrafiltration, semi-permeable membranes are used. In this filtration forces like pressure or concentration gradients lead to a separation through a semipermeable membrane.
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2. __________ is used for ultrafiltration.
a) Permeable membrane
b) Highly permeable membrane
c) Semi-permeable membrane
d) Non-permeable membrane
View Answer

Answer: c
Explanation: A separation through a semipermeable membrane is achieved. Water and low molecular weight solutes pass through the membrane in permeate (filtrate) while suspended solids and solutes of high molecular weight are retained on the retentate.

3. High molecular weight solutes pass through the membrane.
a) True
b) False
View Answer

Answer: b
Explanation: Water and low molecular weight solutes pass through the membrane in permeate (filtrate) while suspended solids and solutes of high molecular weight are retained on the retentate.

4. Which of the following factors are considered in ultrafiltration?
a) Size
b) Colour
c) Taste
d) Smell
View Answer

Answer: a
Explanation: Ultrafiltration is not fundamentally different from micro filtration. In membrane gas separation, it separates based on different amounts of absorption and different rates of diffusion.

5. Which of the following is a tertiary filtration?
a) Coagulation
b) Sand filtration
c) Flocculation
d) Sedimentation
View Answer

Answer: b
Explanation: It has been used to either replace existing secondary (coagulation, flocculation, sedimentation) and tertiary filtration (sand filtration and chlorination) systems employed in water treatment plants or as standalone systems in isolated regions with growing populations.
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6. Which of the following is not correct with respect to ultrafiltration?
a) Chemicals required
b) Compact plant size
c) Good product quality
d) Good pathogen removal
View Answer

Answer: a
Explanation: The plant size required for the operation of ultrafiltration is compact and the product quality is good with good pathogen removal. There are no chemicals required for the process.

7. Macromolecules deposited uniformly on pore walls is called ______
a) Standard blocking
b) Complete blocking
c) Intermediate blocking
d) Blocking
View Answer

Answer: a
Explanation: Macromolecules deposited uniformly on pore walls is called standard blocking. The membrane pore completely sealed by a macromolecule is called complete blocking.

8. Which of the following factors does not stimulate scale formation?
a) pH
b) Temperature
c) Area
d) Flow velocity
View Answer

Answer: c
Explanation: The inorganic salt deposits can block pores causing flux decline, membrane degradation and loss of production. The formation of scale depends on factors like solubility and concentration polarization including pH, temperature, flow velocity and permeation rate.

9. Micro-organisms adhering to the membrane surface forming a gel layer is called ______
a) Scaling
b) Biofilm
c) Gel layer
d) Barrier
View Answer

Answer: b
Explanation: Micro-organisms will adhere to the membrane surface forming a gel layer – known as a biofilm. The film increases the resistance to flow, acting as an additional barrier to permeation.

10. What is the turbidity for hollow fibers?
a) <15
b) <1
c) <10
d) <12
View Answer

Answer: a
Explanation: The turbidity of the hollow fiber is less than 15. The turbidity of spiral-wound is less than 1 and that of ceramic tubes is less than 10.
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11. Which of the following materials are used for high temperature applications?
a) Polypropylene
b) Cellulose acetate
c) Polylactic acid
d) Ceramic
View Answer

Answer: d
Explanation: Most ultrafiltration membranes use polymer materials such as polypropylene, cellulose acetate and Polylactic acid. However, ceramic membranes are used for high temperature applications.

Sanfoundry Global Education & Learning Series – Waste Water Engineering.

To practice all areas of Waste Water Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.

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Waste Water Engineering Questions and Answers – Rapid Filtration »
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Manish Bhojasia
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Facebook | Twitter

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