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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-10 section-1

Each section contains 100 MCQs on Environmental Engineering .
91
The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is
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Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
92
The suitable method of forecasting population for a young and rapidly increasing city is
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
93
Average rate of water consumption per head per day as per Indian Standard is
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Answer & Solution
Answer: Option B
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94
The suitable layout of distribution system for a city with roads of rectangular pattern is
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Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
95
The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called
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Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
96
The effect of increasing diameter of sewer on the self cleansing velocity is
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Answer & Solution
Answer: Option D
Solution:
Self-cleansing velocity is the minimum velocity required to prevent the deposition of solids and keep the sewer clean.

It depends on the diameter of the grain (particle size) rather than the diameter of the sewer.

The self-cleansing velocity in a sewer is typically given by the formula:

v = k * sqrt(g * d * (G - 1) / f)

Where,

v = Self-cleansing velocity

k = Sediment coefficient

g = Acceleration due to gravity

d = Particle diameter

G = Specific gravity of the particle

f = Friction factor

From this equation, it is evident that self-cleansing velocity is independent of the sewer diameter.

Thus, increasing the sewer diameter has no effect on the self-cleansing velocity.
97
For the same solid content, if the quantity of sludge with moisture content of 98% is X, then the quantity of sludge with moisture content of 96% will be
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Answer & Solution
Answer: Option B
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98
The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is
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Answer: Option B
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99
The alum, when added as a coagulant in water
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Answer: Option D
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100
Standard BOD is measured at
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Answer & Solution
Answer: Option C
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