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Environmental Engineering

Environmental Engineering
Activated carbon is used for

Removing odours
Disinfection
Removing hardness
Removing corrosiveness

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Environmental Engineering
The rate of Alteration of pressure filters is

Less than that of slow sand filters
Greater than that of rapid sand filters
Equal to that of slow sand filters
In between the filtration rate of slow sand filters and rapid sand filters

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Environmental Engineering
The settling velocity of a particle in a sedimentation tank depends on

Surface area of tank
Depth of tank
Both depth and surface area of tank
None of these

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Environmental Engineering
The velocity of flow does not depend on

Length of sewer
Hydraulic mean depth of sewer
Grade of sewer
Roughness of sewer

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Environmental Engineering
Settling velocity increases with

Size of particles
Temperature of liquid
Depth of tank
Specific gravity of solid particles

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Environmental Engineering
The suitable layout of distribution system for a city with roads of rectangular pattern is

Radial system
Grid iron system
Dead end system
Ring system

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