1
10
250
1000
✅ The correct answer is option B.
Enviornmental Engineering MCQs
Which of the following is a secondary air pollutant?
Photochemical smog
Sulphur dioxide
Nitrogen dioxide
Dust particles
✅ The correct answer is option A.
The pH value of oxidised sewage is about
1.8
6.2
7.3
13.4
✅ The correct answer is option C.
Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by
Chemical coagulation
Floatation & skimming
Centrifugation
Ultrafiltration
✅ The correct answer is option A.
Reingleman chart is used for the evaluation of __________ pollution.
Air
Water
Noise
Radioactive
✅ The correct answer is option A.
Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?
NOx
Hg
SO₂
F
✅ The correct answer is option C.
The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent.
1
4
8
12
✅ The correct answer is option B.
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.
Presence of bacteria in potable (drinking) water causes
Turbidity
Disease
Bad odour
Bad taste & colour
✅ The correct answer is option B.
Higher concentration of nitrogen dioxide in atmospheric air causes
Cancer
Bronchitis
Asphyxiation
Corrosion
✅ The correct answer is option B.