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 8 of 32

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Q71.
It is customary to design a sewer for D.W.F. on the basis of

a.

average demand

b.

twice the average demand

c.

thrice the average demand

d.

four times the average demand.

Discuss
Answer: (c).thrice the average demand
Q72.
During preliminary treatment of a sewage

a.

Oil and grease are removed from skimming tanks

b.

Floating materials are removed by screening

c.

Girt and sand are removed by girt chambers

d.

All the above.

Discuss
Answer: (d).All the above.
Q73.
Pick up the correct statement from the following :

a.

The larger the sewer in size, more will be velocity

b.

The smaller the sewer in size, less will be velocity

c.

The larger the sewer in size, no deposition will take place

d.

The larger the sewer in size, deposition will take place.

Discuss
Answer: (d).The larger the sewer in size, deposition will take place.
Q74.
The most dangerous pollutant in vehicular emissions is

a.

CO

b.

SO₂

c.

CO₂

d.

O₃.

Discuss
Answer: (a).CO
Q75.
If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is

a.

50 mg/l

b.

100 mg/l

c.

150 mg/l

d.

250 mg/l.

Discuss
Answer: (d).250 mg/l.
Q76.
The clarigesters are

a.

circular septic tanks

b.

rectangular septic tanks

c.

circular Imhoff double tanks with bottom hoppers

d.

circular Imhoff double storey tanks without bottom hoppers.

Discuss
Answer: (d).circular Imhoff double storey tanks without bottom hoppers.
Q77.
Rate of flow of sewage is generally assumed

a.

more than the rate of water supply

b.

equal to the rate of water supply

c.

less than the rate of water supply

d.

at 150 litres per capita.

Discuss
Answer: (c).less than the rate of water supply
Q78.
Maximum permissible velocity 1.5 m/sec, is adopted in drains

a.

with beds of rocks and gravels

b.

lined with stones

c.

both (a) and (b)

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b)
Q79.
For design purposes, the normal rate of infiltration of ground water into the sewer, is

a.

500 litres/km/cm

b.

1000 litres/km/cm

c.

1500 litres/km/cm

d.

2000 litres/km/cm

Discuss
Answer: (d).2000 litres/km/cm
Q80.
The effluent of a septic tank is

a.

fit for discharge into any open drain

b.

foul and contains dissolved and suspended solids

c.

as good as that from a complete treatment

d.

none of these.

Discuss
Answer: (a).fit for discharge into any open drain
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