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 6 of 32

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Q51.
The screens are fixed

a.

perpendicular to the direction of flow

b.

parallel to the direction of flow

c.

at an angle 30° to 60° to the direction of flow

d.

none of these.

Discuss
Answer: (c).at an angle 30° to 60° to the direction of flow
Q52.
In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is

a.

2.25

b.

2.50

c.

2.55

d.

2.65

Discuss
Answer: (d).2.65
Q53.
Pick up the in-correct statement from the following :

a.

Manholes are provided in sewer pipes at suitable intervals

b.

Catch basins are generally provided in sewers for carrying drainage discharge

c.

Inlets are generally provided in all sewers

d.

None of these.

Discuss
Answer: (c).Inlets are generally provided in all sewers
Q54.
The minimum recommended diameter of sewers, is

a.

5 cm

b.

10 cm

c.

15 cm

d.

20 cm.

Discuss
Answer: (c).15 cm
Q55.
Aerobic bacterias

a.

flourish in the presence of free oxygen

b.

consume organic matter as their food

c.

oxidise organic matter in sewage

d.

All the above.

Discuss
Answer: (d).All the above.
Q56.
The rate of accumulation of sludge in septic tanks is recommended as

a.

30 litres/person/year

b.

25 litres/person/year

c.

30 litres/person/month

d.

25 litres/person/month.

Discuss
Answer: (a).30 litres/person/year
Q57.
If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is

a.

200 ppm

b.

225 ppm

c.

250 ppm

d.

None of these.

Discuss
Answer: (c).250 ppm
Q58.
If D is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

a.

D

b.

1.25 D

c.

1.5 D

d.

1.75 D

Discuss
Answer: (c).1.5 D
Q59.
Pick up the correct statement from the following :

a.

In treated sewage, 4 PPm of D.O. is essential

b.

Only very fresh sewage contains some dissolved oxygen

c.

The solubility of oxygen in sewage is 95% that is in distilled water

d.

All the above.

Discuss
Answer: (d).All the above.
Q60.
In olden days the type of section adopted in trunk and out fall sewers was

a.

parabolic shaped

b.

horse shoe shaped

c.

egg shaped

d.

circular shaped.

Discuss
Answer: (b).horse shoe shaped
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