Waste Water Engineering MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Waste Water Engineering, a fundamental topic in the field of Civil Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Waste Water Engineering MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Waste Water Engineering mcq questions that explore various aspects of Waste Water Engineering problems. Each MCQ is crafted to challenge your understanding of Waste Water Engineering principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Civil Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Waste Water Engineering MCQs are your pathway to success in mastering this essential Civil Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Waste Water Engineering. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Waste Water Engineering knowledge to the test? Let's get started with our carefully curated MCQs!

Waste Water Engineering MCQs | Page 18 of 32

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Q171.
In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time

a.

100 mm dia.

b.

150 mm dia.

c.

225 mm dia.

d.

all of these.

Discuss
Answer: (c).225 mm dia.
Q172.
If D is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is

a.

1.250 D

b.

1.350 D

c.

1.425 D

d.

1.625 D.

Discuss
Answer: (d).1.625 D.
Q173.
During putrifaction process of sewage the gas given off, is

a.

carbon dioxide

b.

hydrogen

c.

ammonia

d.

all the above.

Discuss
Answer: (d).all the above.
Q174.
A circular sewer section is preferred to because

a.

it is cheaper in construction

b.

it provides maximum area for a given perimeter

c.

it provides maximum hydraulic mean depth

d.

all the above.

Discuss
Answer: (d).all the above.
Q175.
Assertion (A) : The minimum self cleansing velocity in the sewer, at least once a day, must be generated. Reason (R) : If certain deposition takes place and is not removed, it obstructs free flow and causes further deposition leading to complete blocking of the sewer.

a.

Both A and R are true and R is the correct explanation of A

b.

Both A and R are true but R is not a correct explanation of A

c.

A is true but R is false

d.

A is false but R is true.

Discuss
Answer: (a).Both A and R are true and R is the correct explanation of A
Q176.
Discrete or granular particles change their

a.

size

b.

shape

c.

weight

d.

none of these.

Discuss
Answer: (d).none of these.
Q177.
For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is

a.

10 cm

b.

12 cm

c.

15 cm

d.

18 cm

Discuss
Answer: (c).15 cm
Q178.
For design of sewers, percentage of sewage discharge is assumed

a.

65 to 70%

b.

70 to 75%

c.

75 to 80%

d.

85%.

Discuss
Answer: (c).75 to 80%
Q179.
In case of sewer lines

a.

water test is carried out to check water tightness of the joints

b.

test for straightness is carried out with the help of a lamp and mirror

c.

obstruction test is carried out with the. help of smooth ball of diameter 13 mm

d.

all the above.

Discuss
Answer: (d).all the above.
Q180.
The sewerage system originates from

a.

house sewers

b.

lateral sewers

c.

branch sewers

d.

main sewers

Discuss
Answer: (a).house sewers
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