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 4 of 32

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Q31.
Dilution method of disposing off sewage, is not preferred to

a.

when sewage is fresh

b.

when diluting water has high dissolved oxygen content

c.

when diluting water is used for water supply near the point of sewage disposed

d.

when the diluting water is having flow currents

Discuss
Answer: (c).when diluting water is used for water supply near the point of sewage disposed
Q32.
For house drainage minimum gradient is

a.

1 in 60

b.

1 in 80

c.

1 in 10

d.

1 in 400

Discuss
Answer: (a).1 in 60
Q33.
If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is

a.

1045 mm

b.

1065 mm

c.

1075 mm

d.

1095 mm.

Discuss
Answer: (d).1095 mm.
Q34.
The ratio of minimum hourly flow to the average flow of sewage is

a.

1/4

b.

1/3

c.

1/2

d.

3/4

Discuss
Answer: (b).1/3
Q35.
Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to

a.

initial demand

b.

first stage demand

c.

carbonaceous demand

d.

all of these.

Discuss
Answer: (d).all of these.
Q36.
The sewage is pumped up

a.

from low lying areas

b.

from flat areas

c.

from basements

d.

all the above.

Discuss
Answer: (d).all the above.
Q37.
Removal of oil and grease from sewage, is known

a.

screening

b.

skimming

c.

filtration

d.

none of these.

Discuss
Answer: (b).skimming
Q38.
The gas which may cause explosion in sewers, is

a.

carbondioxide

b.

methane

c.

ammonia

d.

carbon monoxide.

Discuss
Answer: (b).methane
Q39.
In sewers the effect of scouring is more on

a.

top side

b.

bottom side

c.

horizontal side

d.

all sides.

Discuss
Answer: (b).bottom side
Q40.
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is

a.

1 in 60

b.

1 in 100

c.

1 in 120

d.

none of these.

Discuss
Answer: (c).1 in 120
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