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Environmental Engineering

Environmental Engineering
The suitable layout of a distribution system for irregularly growing town is

Ring system
Radial system
Dead end system
Grid iron system

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Environmental Engineering
The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of

1 mg/liter
100 mg/liter
1000 mg/liter
10 mg/liter

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Environmental Engineering
Dissolved oxygen in streams is

Maximum at midnight
Minimum at noon
Same throughout the day
Maximum at noon

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Environmental Engineering
Settling velocity increases with

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

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Environmental Engineering
The type of sewer which is suitable for both combined and separate system is

Egg shaped sewer
Horseshoe type sewer
Circular sewer
Semi-elliptical sewer

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Environmental Engineering
In water treatment, rapid gravity filters are adopted to remove

Bacteria and colloidal solids
Floating solids and dissolved inorganic solids
Dissolved solids and dissolved gases
Dissolved organic substances

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MORE MCQ ON Environmental Engineering

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