Civil Engineering MCQs

Page No. 171

In lime-soda process________________?


aonly carbonate hardness is removed

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bonly non-carbonate hardness is re-moved

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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

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


a sodium sulphate

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b copper sulphate

✓


csodium chloride

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dcalcium chloride

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View Answer copper sulphate

As compared to cast iron pipes, steel pipes are______________?


aheavier

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bstronger

✓


ccostlier

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d less susceptible to corrosion

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View Answer stronger

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


aring system

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b dead end system

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cradial system

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dgrid iron system

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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

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bequivalent pipe method

✓


cHardy cross method

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d electrical analysis method

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Hardy cross method of analysis of distribution system________________?


a involves successive trials

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b takes economic aspects into account

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c is time consuming

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dA and C

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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

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cair relief valve

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d pressure relief valve

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View Answer reflux valve

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


a house sewer

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blateral sewer

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cintercepting sewer

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d submain sewer

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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

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b combined system

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cpartially combined system

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dpartially separate system

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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

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b4000

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c100000

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d400000

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View Answer 400000

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