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 9 of 32

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Q81.
The drainage area of a town is 12 hectares. Its 40% area is hard pavement (K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/t+60 the maximum run off is

a.

0.10 cumec

b.

0.12 cumec

c.

0.15 cumec

d.

0.20 cumec.

Discuss
Answer: (c).0.15 cumec
Q82.
The detention period for plain sedimentation water tanks, is usually

a.

4 to 8 hours

b.

8 to 16 hours

c.

16 to 24 hours

d.

24 to 36 hours.

Discuss
Answer: (a).4 to 8 hours
Q83.
To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is

a.

0.50 m/sec

b.

0.60 m/sec

c.

0.70 m/sec

d.

0.75 m/sec

Discuss
Answer: (d).0.75 m/sec
Q84.
Pick up the correct statement from the following :

a.

Turbidity is more in strong sewage

b.

The black colour indicates septic sewage

c.

The fresh sewage is practically odourless

d.

All the above.

Discuss
Answer: (d).All the above.
Q85.
In sewers the gas generally found, is

a.

Hydrogen sulphide (H₂S)

b.

Carbon dioxide (CO₂)

c.

Methane (CH₄)

d.

All the above.

Discuss
Answer: (d).All the above.
Q86.
A sewer running partially full and hurried with back filled, fails in compression due to

a.

weight of the pipe

b.

weight of the back fill

c.

superimposed traffic loads

d.

all the above.

Discuss
Answer: (d).all the above.
Q87.
A manhole is classified as shallow if its depth is between

a.

0.4 to 0.5 m

b.

0.5 to 0.7 m

c.

0.7 to 0.9 m

d.

0.9 to 1.20 m

Discuss
Answer: (c).0.7 to 0.9 m
Q88.
The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is

a.

1.095

b.

1.085

c.

1.075

d.

1.065

Discuss
Answer: (a).1.095
Q89.
Pick up the correct statement from the following :

a.

The maximum rate of storm run off is called peak drainage discharge

b.

Rational method of estimating peak run off, may be used precisely for areas less than 50 hectares

c.

The period after which the entire area starts contributing to the run off, is called the time of concentration

d.

All the above.

Discuss
Answer: (d).All the above.
Q90.
For trunk and out-fall, the type of sewers generally used, is

a.

standard egg shaped

b.

circular shaped

c.

horse shoe shaped

d.

parabolic shaped

Discuss
Answer: (c).horse shoe shaped
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