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Environmental Engineering in CE

Environmental Engineering in CE
The lowest layer of atmosphere is known as the

Stratosphere
Ionosphere
None of these
Troposphere

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Environmental Engineering in CE
CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.

10⁵
10¹⁵
10²
10⁹

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Environmental Engineering in CE
Persons working in cement plants and limestone quarries are more prone to disease like

Asthma
Cancer
Silicosis
Flourosis (bone disease)

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Environmental Engineering in CE
Fine grit present in sewage is removed in the __________ during sewage treatment.

Trickling filter
Skimming tank
Detritus tank
Grit chamber

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Environmental Engineering in CE
Thermal pollution due to excessive heat & temperature in the working place causes

Reduction in working efficiency of manpower
High breathing rate
All of these
Fatigue

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Environmental Engineering in CE
Which of the following pollutants is not emitted during volcanic eruptions?

Hydrocarbons
H₂S
CO
SO₂

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