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Environmental Engineering in CE

Environmental Engineering in CE
Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called

Troposphere
Thermosphere
Mesosphere
Stratosphere

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Environmental Engineering in CE
Photochemical smog is formed from automobile exhaust

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

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Environmental Engineering in CE
What are the methods of treatment & disposal of radioactive wastes?

Evaporation & chemical precipitation
Biological methods & adsorption in ion exchange materials
All of these
Fixing into a solid mass with cement and sinking deep in the sea

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Environmental Engineering in CE
Infective bacteria in water is killed by the __________ process.

Sterilisation
None of these
Disinfection
Aeration

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

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

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Environmental Engineering in CE
In water treatment plant, zeolite process is used to remove the __________ of water.

Hardness
Alkalinity
Iron & zinc
Acidity

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