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WASTE WATER ENGINEERING FINAL VERIFIED
EXAM AND STUDYGUIDE NEWEST 2026/2027
ACTUAL EXAM COMPLETE 300 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||NEWEST
EXAM!!!
156
If D is the diameter of a circular sewer and D' is the top
horizontal diameter of an equivalent egg
shaped section, the relationship which holds good, is
(A) D' = 0.64 D
(B) D' = 0.74 D
(C) D' = 0.84 D
(D) D' = 0.94 D - ANSWER-Option C
157
The spacing of man holes along a straight portion of a
sewer is 300 m, the diameter of the sewer
may be
(A) 0.9 cm
(B) 1.2 m
(C) 1.5 m
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(D) > 1.5 m - ANSWER-Option D
158
A sewer running partially full and hurried with back filled,
fails in compression due to
(A) Weight of the pipe
(B) Weight of the back fill
(C) Superimposed traffic loads
(D) All the above - ANSWER-Option D
159
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
(A) 100
(B) 1000
(C) 5000
(D) 10000 - ANSWER-Option D
160
Kjeldahl nitrogen is a mixture of
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(A) Ammonia and nitrogen
(B) Nitrogen and organic nitrogen
(C) Organic nitrogen and ammonia
(D) All the above - ANSWER-Option D
161
The quantity of liquid waste which flows in sewers during
the period of rainfall, is known
(A) Sanitary sewage
(B) Industrial waste
(C) Storm sewage
(D) None of these - ANSWER-Option C
142
Chlorination of water is done for the removal of
(A) Bacterias
(B) Suspended solids
(C) Sediments
(D) Hardness - ANSWER-Option A
143
Sludge banks are formed if sewage is disposed of in
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(A) Rivers
(B) Seas
(C) Lakes
(D) None of these - ANSWER-Option B
144
Assertion (A): A free board of 0.3 m is provided above the
top sewage line in septic tanks.
Reason (R): It helps to accommodate the scum in the
septic tank.
(A) Both A and R is true and R is the correct explanation
of A
(B) Both A and R is true but R is not a correct explanation
of A
(C) A is true but R is false
(D) A is false but R is true - ANSWER-Option A
145
The temperature affects the
(A) Biological activity of bacteria in sewage
(B) Solubility of gases in sewage
(C) Viscosity of sewage
WASTE WATER ENGINEERING FINAL VERIFIED
EXAM AND STUDYGUIDE NEWEST 2026/2027
ACTUAL EXAM COMPLETE 300 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||NEWEST
EXAM!!!
156
If D is the diameter of a circular sewer and D' is the top
horizontal diameter of an equivalent egg
shaped section, the relationship which holds good, is
(A) D' = 0.64 D
(B) D' = 0.74 D
(C) D' = 0.84 D
(D) D' = 0.94 D - ANSWER-Option C
157
The spacing of man holes along a straight portion of a
sewer is 300 m, the diameter of the sewer
may be
(A) 0.9 cm
(B) 1.2 m
(C) 1.5 m
,2|Page
(D) > 1.5 m - ANSWER-Option D
158
A sewer running partially full and hurried with back filled,
fails in compression due to
(A) Weight of the pipe
(B) Weight of the back fill
(C) Superimposed traffic loads
(D) All the above - ANSWER-Option D
159
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
(A) 100
(B) 1000
(C) 5000
(D) 10000 - ANSWER-Option D
160
Kjeldahl nitrogen is a mixture of
,3|Page
(A) Ammonia and nitrogen
(B) Nitrogen and organic nitrogen
(C) Organic nitrogen and ammonia
(D) All the above - ANSWER-Option D
161
The quantity of liquid waste which flows in sewers during
the period of rainfall, is known
(A) Sanitary sewage
(B) Industrial waste
(C) Storm sewage
(D) None of these - ANSWER-Option C
142
Chlorination of water is done for the removal of
(A) Bacterias
(B) Suspended solids
(C) Sediments
(D) Hardness - ANSWER-Option A
143
Sludge banks are formed if sewage is disposed of in
, 4|Page
(A) Rivers
(B) Seas
(C) Lakes
(D) None of these - ANSWER-Option B
144
Assertion (A): A free board of 0.3 m is provided above the
top sewage line in septic tanks.
Reason (R): It helps to accommodate the scum in the
septic tank.
(A) Both A and R is true and R is the correct explanation
of A
(B) Both A and R is true but R is not a correct explanation
of A
(C) A is true but R is false
(D) A is false but R is true - ANSWER-Option A
145
The temperature affects the
(A) Biological activity of bacteria in sewage
(B) Solubility of gases in sewage
(C) Viscosity of sewage
