Environmental Engineering in CE
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

All of these
Respiratory trouble
Irritation in eyes
Poor visibility due to sky darkening

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Environmental Engineering in CE
Which of the following is not a practical method of low level radioactive waste disposal?

Discharging to atmosphere through tall stacks after dilution
Disposing off in rivers & oceans
Dilution with inert material
Filling in steel crates and shooting it off out of earth

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Environmental Engineering in CE
Lagoons used for purification of polluted water

Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds
Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre
Use micro-organisms/bacteria in presence of dissolved oxygen
All of these

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