1
4
8
12
✅ The correct answer is option B.
Environmental Engineering MCQs
Enhance your preparation with our Environmental Engineering MCQs with answers and explanations. Our collection covers key topics such as water and wastewater treatment, air pollution control, solid waste management, environmental impact assessment, sustainability, and environmental regulations. These multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, PEC exams, university entry tests, and environmental engineering job assessments. Practice online to strengthen your concepts, improve problem-solving skills, and excel in exams with our updated Environmental Engineering MCQs.
12. Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by
Quenching of hot coke
Discharging in the river stream
Filtration and recycling for cooling coke oven gas
None of these
✅ The correct answer is option A.
13. Presence of bacteria in potable (drinking) water causes
Turbidity
Disease
Bad odour
Bad taste & colour
✅ The correct answer is option B.
14. Higher concentration of nitrogen dioxide in atmospheric air causes
Cancer
Bronchitis
Asphyxiation
Corrosion
✅ The correct answer is option B.
15. Which of the following is not a secondary air pollutant?
Ozone
Photochemical smog
Sulphur dioxide
All of the above
✅ The correct answer is option C.
16. Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels.
105
135
160
185
✅ The correct answer is option B.
17. Presence of soluble organics in polluted water causes
Undesirable plants growth
Depletion of oxygen
Fire hazards
Explosion hazards
✅ The correct answer is option B.
18. Noise level inside a jet air liner in normal flight is about __________ decibels.
80
100
125
145
✅ The correct answer is option B.
19. Solid content in most of the domestic sewage is about __________ percent.
0.001
0.1
5
10
✅ The correct answer is option B.
20. Presence of __________ bacteria in water causes disease like typhoid.
Aerobic
Pathogenic
Anaerobic
Non-pathogenic
✅ The correct answer is option B.