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Environmental Engineering in CE

Environmental Engineering in CE
Dust collection efficiency of a cyclone separator depends upon its

Diameter
All of these
Inlet gas velocity
Overall height

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

Combustion
Trees
Urea
Biomass burning

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Environmental Engineering in CE
The upper layer of atmosphere is called the

Ionosphere
Troposphere
None of these
Stratosphere

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Environmental Engineering in CE
Which of the following is a green house gas other than CO₂ ?

Chlorofluro carbons (CFC)
Methane
All of these
Nitrous oxide

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Environmental Engineering in CE
Corrosion in boilers can be prevented by

All of these
Enhancing pH of feed water by adding alkali
Deaeration of feed water
Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion

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Environmental Engineering in CE
Presence of excess flourine in water causes

Fluorosis
Respiratory disease
Dental cavity
Tooth decay

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MORE MCQ ON Environmental Engineering in CE

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