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Environmental Engineering in CE

Environmental Engineering in CE
The length of rectangular sedimentation tank should not be more than(Where ‘B’ is the width of the tank)

8B
B
4B
2B

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

Asthma
Cancer
Flourosis (bone disease)
Silicosis

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Environmental Engineering in CE
Presence of bacteria in potable (drinking) water causes

Turbidity
Bad odour
Disease
Bad taste & colour

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Environmental Engineering in CE
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of

CFC (chloro fluoro carbon)
Hydrocarbons
SO₂
CO₂

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Environmental Engineering in CE
Operating principle of cyclone separator is based on the action of __________ dust particles.

Gravitational force on
Electrostatic force on
Centrifugal force on
Diffusion of

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Environmental Engineering in CE
The most commonly used chemical coagulant in water treatment is

Ferrous sulphate
Lime
Hydrazine
Alum

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