Potable water
Cooling water
Distilled water
Industrial effluents
✅ The correct answer is option D.
Enviornmental Engineering MCQs
Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur?
Thermosphere
Troposphere
Stratosphere
None of these
✅ The correct answer is option B.
The progressive warming up of the earth’s surface is mainly due to the
Automobile exhaust
Blanketing effect of CO₂ in the atmosphere
De-forestation
Thickening of ozone layer
✅ The correct answer is option B.
Siderosis is a disease caused by the inhalation of __________ dust.
Coal
Silica
Iron
None of these
✅ The correct answer is option C.
Thermal pollution due to excessive heat & temperature in the working place causes
Reduction in working efficiency of manpower
Fatigue
High breathing rate
All of the above
✅ The correct answer is option D.
Which of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage?
Smog & ozone
Hydrogen fluoride & nitrogen oxides
Sulphur dioxide & spray of weed killers
Carbon monoxide
✅ The correct answer is option D.
Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air’s water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes
Poor visibility due to sky darkening
Irritation in eyes
Respiratory trouble
All of the above
✅ The correct answer is option D.
Which of the following is a green house gas other than CO₂ ?
Methane
Nitrous oxide
Chlorofluro carbons (CFC)
All of the above
✅ The correct answer is option D.
__________ is removed from water by lime-soda process.
Foul smell and taste
Iron and manganese
Temporary hardness
Permanent hardness
✅ The correct answer is option C.
The commonest form of iron & manganese found in ground water as pollutant is in the form of their
Carbonates
Bi-carbonates
Chlorides
Sulphides
✅ The correct answer is option B.