Civil Engineering MCQs

Page No. 178

A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called________________?


a house sewer

✓


blateral sewer

✖


c main sewer

✖


d submain sewer

✖


View Answer house sewer

Scour valves are provided ______________?


aat street corners to control the flow of waterat street corners to control the flow of water

✖


bat every depression and dead ends to drain out the waste water that may collect there

✓


cat the foot of rising main along the slope to prevent back running of water

✖


d at every summit of rising mains

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The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is_______________?


acheck valve

✖


bsluice valve

✓


csafety valve

✖


dscour valve

✖


View Answer sluice valve

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


a circle method

✓


bequivalent pipe method

✖


celectrical analysis method

✖


dHardy cross method

✖


View Answer circle method

The suitable layout of distribution system for a city with roads of rectangular pattern is______________?


a grid iron system

✓


bdead end system

✖


cring system

✖


dradial system

✖


View Answer grid iron system

The suitable layout of a distribution system for irregularly growing town is_______________?


adead end system

✓


bgrid iron system

✖


cradial system

✖


dring system

✖


View Answer dead end system

Activated carbon is used for_____________?


a disinfection

✖


bremoving hardness

✖


cremoving odours

✓


dremoving corrosiveness

✖


View Answer removing odours

The major disadvantage of lime soda process of water softening is that_________________?


a it is unsuitable for turbid and acidic water

✖


bhuge amount of precipitate is formed which creates a disposal problem

✓


c the effluent cannot be reduced to zero hardness

✖


dit is unsuitable for softening the water of excessive hardness

✖



Disinfection efficiency is________________?


areduced at higher pH value of wate

✓


b unaffected by pH value of water

✖


c increased at higher pH value of water

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dhighest at pH value equal to 7

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The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is________________?


a9500

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b 9800

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c 10100

✖


d10920

✓


View Answer 10920

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