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Environmental Engineering MCQ Questions & Answers | Civil Engineering

Learn Environmental Engineering MCQ questions & answers are available for a Civil Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Environmental Engineering MCQ question is the important chapter for a Civil Engineering and GATE students. Page-8 section-1

Each section contains 100 MCQs on Environmental Engineering .
71
Which of the following chemical compounds can be used for de-chlorination of water?
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
72
The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
73
The suitable method for disinfection of swimming pool water is
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Answer & Solution
Answer: Option D
Solution:
Chlorination is the suitable method for disinfection of swimming pool water. Chlorine is commonly used to disinfect swimming pool water because it is effective in killing bacteria, viruses, and other microorganisms that can thrive in water. It helps maintain safe and sanitary swimming conditions by preventing the spread of waterborne diseases.

The other options are not typically used for disinfecting swimming pool water:
Option A: Ultra violet rays treatment is a method for disinfection, but it is less commonly used in swimming pools.
Option B: Lime treatment is not primarily used for disinfection but may be used for water conditioning and pH adjustment.
Option C: By using potassium permanganate is not a common method for swimming pool disinfection.

So, the correct answer is Option D: Chlorination, which is the standard and effective method for disinfecting swimming pool water.

74
The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
75
Disinfection efficiency is
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Answer & Solution
Answer: Option A
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76
The time of concentration is defined as
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
77
The velocity of flow of water in a sedimentation tank is about
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
78
Hardy cross method of analysis of distribution system
(i) Involves successive trials
(ii) Takes economic aspects into account
(iii) Is time consuming
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
79
A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called
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Answer & Solution
Answer: Option A
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80
The depression of water table in a well due to pumping will be maximum
(Where ‘R’ is the radius of influence)
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board