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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following is the most severe air pollutant?

CO
Hydrocarbons
NOx
SO₂

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Environmental Engineering in CE
Photochemical smog is formed from automobile exhaust

Appears only on sunny days
By reaction of hydrocarbon & nitric oxide in presence of sunlight
All of these
Is harmful for crops and trees also besides causing eye irritation & asthma

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Environmental Engineering in CE
The maximum CO₂ is emitted into the atmosphere by

Urea
Combustion
Trees
Biomass burning

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Environmental Engineering in CE
The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?

Benzene hexachloride
Alkyl benzene sulphonate (ABS)
Chlorine
Alkalis

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Environmental Engineering in CE
Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by

Ultrafiltration
Floatation & skimming
Centrifugation
Chemical coagulation

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Environmental Engineering in CE
Carbon monoxide is a pollutant, which causes

Retardation in crop growth
Respiratory disease (e.g. asthma)
Asphyxiation (suffocation) leading to death
Damage to building materials like marble

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