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Environmental Engineering

Environmental Engineering
Which of the following chemical compounds can be used for de-chlorination of water?

Bleaching powder
Sulphur dioxide
Chloramines
Carbon dioxide

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Environmental Engineering
The slope of sewer shall be

Steeper than 1 in 20
Zero
Given in the direction opposite to natural slope of ground
Given in the direction of natural slope of ground

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Environmental Engineering
The method of analysis of distribution system in which the domestic supply is neglected and fire demand is considered is

Hardy cross method
Circle method
Equivalent pipe method
Electrical analysis method

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Environmental Engineering
The rate of Alteration of pressure filters is

Greater than that of rapid sand filters
Less than that of slow 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 effective size of sand particles used in slow sand filters is

0.60 to 1.00 mm
0.25 to 0.35 mm
0.35 to 0.60 mm
1.00 to 1.80 mm

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Environmental Engineering
The layout of distribution system in which water flows towards the outer periphery is

Ring system
Grid iron system
Dead end system
Radial system

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