Engineering Questions with Answers - Multiple Choice Questions

Environmental Engineering MCQ’s – Types of Sewers

1 - Question

 Which type of sewer serves as an outlet for large territory?
a) Lateral sewer
b) Main sewer
c) Branch sewer
d) Separate sewer

View Answer

Answer: b
Explanation: Main sewer acts as an outlet for the large territory as it receives sewage from many tributary branches.




2 - Question

Which sewer collects sewage directly from the house?
a) Main sewer
b) Outfall sewer
c) Lateral sewer
d) Intercepting sewer

View Answer

Answer: c
Explanation: The first stage of collection of sewage starts from the house which is done by Lateral sewer.




3 - Question

_______ sewer collects sewage from collecting system to a disposal plant?
a) House sewer
b) Outfall sewer
c) Lateral sewer
d) Separate sewer

View Answer

Answer: b
Explanation: The Outfall sewer is a sewer that carries the sewage from collecting systems and transfers it to a point of final discharge i.e a disposal plant.




4 - Question

Which sewer carries both sewage and storm water?
a) Outfall sewer
b) Separate sewer
c) Main sewer
d) Combined sewer

View Answer

Answer: d
Explanation: Combined sewer carries both the sewage and the rain water from the roofs of the house and from the street.




5 - Question

Which sewer is also called as submain sewer?
a) Branch sewer
b) Separate sewer
c) Main sewer
d) Lateral sewer

View Answer

Answer: a
Explanation: Submain sewer receives sewage from small area which finally get discharged into the main sewer. It is also called as branch sewer.




6 - Question

Which sewer is used to carry the excess flow of existing sewer?
a) Branch sewer
b) Relief sewer
c) Main sewer
d) Lateral sewer

View Answer

Answer: a
Explanation: The Relief sewer is used to carry the excess flow of the existing sewer. It is also called as overflow sewer.




7 - Question

Asbestos cement sewers are made from __________
a) Cement, silica
b) Asbestos fibre, copper
c) Asbestos fibre, cement, silica
d) Asbestos fibre, magnesium

View Answer

Answer: c
Explanation: Asbestos cement sewers are made from the composition of asbestos fibre, cement, silica asbestos fibre acts as a reinforcing material.




8 - Question

 Which of the following is a disadvantage of asbestos cement sewer?
a) They are light weight
b) They can be easily jointed
c) They are brittle
d) Inside surface is smooth

View Answer

Answer: c
Explanation: Asbestos cement sewer is weak against the impact force and requires care in handling.




9 - Question

Asbestos cement sewer offers resistant to sulfide corrosion.
a) True
b) False

View Answer

Answer: b
Explanation: Asbestos cement sewer is used as verticals only because they are prone to sulfide corrosion.

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