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Waste Water Engineering MCQ Questions & Answers | Civil Engineering

Learn Waste Water Engineering MCQ questions & answers are available for a Civil Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Waste Water Engineering MCQ question is the important chapter for a Civil Engineering and GATE students. Page-6 section-2

Each section contains 100 MCQs on Waste Water Engineering .
51
In a sludge tank, the gas mainly produced, is
Discuss
Answer & Solution
Answer: Option D
Solution:
In a sludge tank, the decomposition of organic matter takes place under anaerobic conditions. During this process, microorganisms break down organic solids and produce gases as by-products.

The main gases generated are methane (CH₄) and carbon dioxide (CO₂). Since methane is not included in the given options, carbon dioxide is the correct answer.

Oxygen and nitrogen are not produced during anaerobic digestion, and hydrogen is formed only in very small quantities compared to carbon dioxide.
52
A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
53
The gas which may cause explosion in sewers, is
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
54
Sludge banks are formed if sewage is disposed of in
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
55
The rate of accumulation of sludge in septic tanks is recommended as
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
56
In SI units the power of sound is represented in
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
57
Disposal to sewage in large cities, is done in
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
58
A well oxidized sewage contains nitrogen mainly as
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
59
The settlement of a particle in sedimentation tank, is affected by
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
60
Skimming tanks are
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board