Civil Engineering MCQs

Page No. 171

In lime-soda process________________?


aonly carbonate hardness is removed


bonly non-carbonate hardness is re-moved


clime reduces the carbonate hardness and soda-ash removes the non-carbo¬nate hardness


dlime reduces the non-carbonate hard-ness and soda-ash removes the carbo¬nate hardness



Which of the following compounds is widely used for algae control ?


a sodium sulphate


b copper sulphate


csodium chloride


dcalcium chloride


View Answer copper sulphate

As compared to cast iron pipes, steel pipes are______________?


aheavier


bstronger


ccostlier


d less susceptible to corrosion


View Answer stronger

The layout of distribution system in which water flows towards the outer periphery is_________________?


aring system


b dead end system


cradial system


dgrid iron system


View Answer radial system

Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system ?


acircle method


bequivalent pipe method


cHardy cross method


d electrical analysis method



Hardy cross method of analysis of distribution system________________?


a involves successive trials


b takes economic aspects into account


c is time consuming


dA and C


View Answer A and C

The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is____________________?


areflux valve


bsluice valve


cair relief valve


d pressure relief valve


View Answer reflux valve

A sewer that receives the discharge of a number of house sewers is called________________?


a house sewer


blateral sewer


cintercepting sewer


d submain sewer


View Answer lateral sewer

For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be________________?


aseparate system


b combined system


cpartially combined system


dpartially separate system


View Answer separate system

If Biochemical oxygen demand (BOD. of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is_________________?


a1000


b4000


c100000


d400000


View Answer 400000

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