Explore topic-wise MCQs in Environmental Engineering.

This section includes 183 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Engineering knowledge and support exam preparation. Choose a topic below to get started.

151.

Which of the following is incorrect regarding circular sewer?

A. It is easily manufactured
B. It offers more opportunities for deposits
C. It is the most economical section
D. It has uniform curvature
Answer» C. It is the most economical section
Discussion
152.

_______ is the additional flow occurring during rainy season.

A. Gradually varied flow
B. Rapidly varied flow
C. Dry weather flow
D. Storm water flow
Answer» E.
Discussion
153.

The upper portion of Egg shaped sewer is called as _____

A. Level
B. Arch
C. Invert
D. Wedge
Answer» C. Invert
Discussion
154.

Egg shaped sewers are more suitable in a combined system during dry weather flow.

A. True
B. False
C. May be True or False
D. Can't say
Answer» C. May be True or False
Discussion
155.

Which of the following is correct regarding water carriage system?

A. Chances of the epidemic is there
B. Foul smell is produced
C. Does not cause pollution
D. Highly dependent on labours
Answer» D. Highly dependent on labours
Discussion
156.

The maximum velocity at which no abrasion takes place is called _______

A. Settling velocity
B. Self cleansing velocity
C. Mean velocity
D. Non Scouring velocity
Answer» E.
Discussion
157.

The arch cross section is divided into how many types?

A. 2
B. 3
C. 4
D. 5
Answer» C. 4
Discussion
158.

________ is the process which indicates the flow of waste water from the sewer into the ground.

A. Exfiltration
B. Infiltration
C. Filtration
D. Osmosis
Answer» B. Infiltration
Discussion
159.

Which system of collection of sewage is called a dry system?

A. Conservancy system
B. Biological digestion
C. Incernation
D. Water carriage system
Answer» B. Biological digestion
Discussion
160.

Which of the following is incorrect regarding water meter?

A. Should be durable
B. Easy to maintain and repair
C. Should allow backflow of water
D. Should be rugged
Answer» D. Should be rugged
Discussion
161.

The size of the town is 15,000. What is the density of population per hectare?

A. 50
B. 75
C. 100
D. 200
Answer» E.
Discussion
162.

The Lateral sewer has a peaking factor of ____________

A. 1
B. 2
C. 3
D. 4
Answer» E.
Discussion
163.

Which device warns that the liquid is above the pump level?

A. High level alarm
B. Check valve
C. Union
D. Pump lift chain
Answer» B. Check valve
Discussion
164.

What is the wetted perimeter of a circular section of sewer?

A. (22/7) *D²
B. (22/7) *D
C. (22/7) *D³
D. (22/7)² *D
Answer» C. (22/7) *D³
Discussion
165.

Hog feeding is a type of ______

A. Campaign
B. Food contest
C. Garbage disposal method
D. Disease
Answer» D. Disease
Discussion
166.

The expression for the self cleansing velocity is given by ____________

A. (8*B* (G-1) *g*d/f)⅓
B. (8*B* (G-1) *g*d/f)²
C. (8*B* (G-1) *g*d/f)
D. (8*B* (G-1) *g*d/f)½
Answer» E.
Discussion
167.

_______ sewer collects sewage from collecting system to a disposal plant?

A. House sewer
B. Outfall sewer
C. Lateral sewer
D. Separate sewer
Answer» C. Lateral sewer
Discussion
168.

_______ is defined as the percentage of rain water in the form of runoff.

A. Storm water flow
B. Coefficient of permeability
C. Impermeability factor
D. Coefficient of consolidation
Answer» D. Coefficient of consolidation
Discussion
169.

In order to reduce temperature stress ______________ joints are provided.

A. Contraction
B. Expansion
C. Bell and spigot
D. Collar
Answer» C. Bell and spigot
Discussion
170.

Which sewer appurtenance is used for removing rainwater from the roads?

A. Catch basin
B. Gullies
C. Lamp hole
D. Storm regulators
Answer» C. Lamp hole
Discussion
171.

Which component of the pumping chamber prevents ground water from entering the septic tank?

A. Pump lift chain
B. Access riser
C. Check valve
D. Union
Answer» C. Check valve
Discussion
172.

Which of the following represents the correct order in terms of the maximum efficiency of the pump?

A. Centrifugal > Airlift > Diaphragm
B. Diaphragm > Airlift > Centrifugal
C. Airlift > Centrifugal > Diaphragm
D. Centrifugal > Diaphragm > Airlift
Answer» E.
Discussion
173.

Which of the following device prevents the back flow of wastewater?

A. Gate valve
B. Check valve
C. Union
D. Pump lift chain
Answer» C. Union
Discussion
174.

Which of the following has a maximum peaking factor?

A. Domestic sewer
B. Branch sewer
C. Main sewer
D. Trunk sewer
Answer» B. Branch sewer
Discussion
175.

The peaking factor is defined by __________

A. Peak flow * Average flow
B. Peak flow – Average flow
C. Peak flow + Average flow
D. Peak flow / Average flow
Answer» E.
Discussion
176.

In India, the maximum sewage flow occurs normally in which month?

A. July
B. January
C. February
D. December
Answer» B. January
Discussion
177.

The minimum sewage flow occurs normally in which month in India?

A. March
B. January
C. August
D. July
Answer» C. August
Discussion
178.

The relation between the maximum and average rate of flow is defined by ___________

A. QMAX = (1 + 14/(4 + P⁰·⁵)) * QAVG
B. QMAX = (1 + 1/(4 + P⁰·⁵)) * QAVG
C. QMAX = (1 + 4 + P⁰·⁵) * QAVG
D. QMAX = (1 + P⁰·⁵) * QAVG
Answer» B. QMAX = (1 + 1/(4 + P⁰·⁵)) * QAVG
Discussion
179.

At what time the peak flow takes place?

A. 3hours
B. 7hours
C. 10hours
D. 14hours
Answer» D. 14hours
Discussion
180.

Which of the following represents the minimum flow?

A. A
B. B
C. C
D. D
Answer» B. B
Discussion
181.

The point R in the figure represents the ________

A. A
B. B
C. C
D. D
Answer» D. D
Discussion
182.

Which of the following represents the peak flow?

A. A
B. B
C. C
D. D
Answer» C. C
Discussion
183.

A Service connection is a connection from the distribution system to the ______

A. Factory
B. School
C. Industry
D. Consumer
Answer» E.
Discussion