Civil Engineering MCQs – Environmental Engineering Mcqs Latest

Civil Engineering MCQs – Environmental Engineering Mcqs Latest

This post contains latest “Civil Engineering MCQs – Environmental Engineering Mcqs”. These mcqs of civil engineering will help out in daily routine life. You will get latest Civil Engineering Mcqs for written tests, interviews and etc. There are many professional and students worrying about their competitive exams, interviews, entrance exams and others, so these civil engineering mcqs of hydraulics & fluid mechanics will guide them in an easy way.

By practicing these mcqs of Civil Engineering MCQs – Environmental Engineering Mcqs, an individual for exams performs better than before. This post comprising of civil engineering objective questions and answers related to Environmental Engineering Mcqs“. As wise people believe “Perfect Practice make a Man Perfect”. It is therefore practice these mcqs of civil engineering to approach the success. Tab this page to check “Latest Environmental Engineering Mcqs” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others.

Latest Hydraulics and Fluid Mechanics Mcqs

The most occurred mcqs of Environmental Engineering in past papers. Past papers of Environmental Engineering Mcqs. Past papers of Environmental Engineering Mcqs. Mcqs are the necessary part of any competitive / job related exams. The Environmental Engineering Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Environmental Engineering Mcqs. The Important series of Environmental Engineering Mcqs are given below:

The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called_______________?

A. waste pipe
B. vent pipe
C. soil pipe
D. antisiphonage pipe

When there is no recirculation of sewage, then recirculation factor is_______________?

A. infinity
B. 1
C. 0
D. none of the above

Sludge volume index is defined as the ratio of_______________?

A. percentage of sludge by volume to percentage of suspended solids by weight
B. percentage of suspended solids by weight to percentage of sludge by volume
C. percentage of sludge by volume to percentage of total solids by weight
D. percentage of total solids by weight to percentage of sludge by volume

The main disadvantage of oxidation pond is that________________?

A. large area is required for construction
B. BOD removal is very low
C. maintenance and operation cost are high
D. none of the above

The detention period for oxidation ponds is usually kept as______________?

A. 24 hours
B. 4-8 hours
C. 10 to 15 days
D. 3 months

The working conditions in imhoff tanks are_______________?

A. anaerobic only
B. aerobic only
C. aerobic in lower compartment and anaerobic in upper compartment
D. anaerobic in lower compartment and aerobic in upper compartment

Generally the detention period for grit chambers is kept as_______________?

A. 1 minute
B. 2-4 hours
C. 5 minutes
D. 12 hours

Septic tank is a______________?

1) settling tank
2) digestion tank
3) aeration tank

The correct answer is?

A. (1) and (3)
B. (1) and (2)
C. only (1)
D. only (3)

Corrosion in concrete sewers is caused by______________?

A. septic conditions
B. chlorine
C. dissolved oxygen
D. nitrogen

Sewage treatment units are designed for_______________?

A. minimum flow only
B. maximum flow only
C. average flow only
D. maximum and minimum flow

The means of access for inspection and cleaning of sewer line is known as_______________?

A. drop manhole
B. manhole
C. inlet
D. catch basin

Dissolved oxygen in streams is______________?

A. maximum at noon
B. maximum at midnight
C. minimum at noon
D. same throughout the day

Engineering Economy MCQs – Civil Engineering

The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is______________?

A. 10 ppm
B. 4 ppm
C. 1 ppm
D. 40 ppm

The ratio of 5 day BOD to ultimate BOD is about_______________?

A. 3/4
B. 2/3
C. 1/3
D. 1.0

The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by_______________?


Settling velocity increases with_______________?

A. size of particles
B. specific gravity of solid particles
C. depth of tank
D. temperature of liquid

Which of the following retards the self purification of stream ?

A. sunlight
B. higher temperature
C. satisfying oxygen demand
D. none of the above

The characteristics of fresh and septic sewage respectively are____________________?

A. both acidic
B. alkaline and acidic
C. acidic and alkaline
D. both alkaline

The most commonly used sewer under culverts is_______________?

A. circular brick sewer
B. semi-elliptical sewer
C. circular cast iron sewer
D. horse-shoe type sewer

An egg shaped section of sewer________________?

A. is easy to construct
B. provides self cleansing velocity at low discharges
C. is more stable than circular section
D. is economical than circular section

The main disadvantage of cement concrete sewers is________________?

A. difficulty in construction
B. less strength
C. difficulty in transportation due to heavy weight
D. less life

The design discharge for the combined sewer system shall be taken as________________?

A. rainfall + DWF
B. equal to rainfall
C. rainfall + 2 DWF
D. rainfall + 6 DWF

The slope of sewer shall be__________________?

A. given in the direction of natural slope of ground
B. zero
C. given in the direction opposite to natural slope of ground
D. steeper than 1 in 20

The specific gravity of sewage is_______________?

A. slightly less than 1
B. much greater than 1
C. equal to 1
D. slightly greater than 1

MCQs of Civil Engineering Latest

If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be__________________?

A. lOmm/hr
B. 4 mm/hr
C. 20 mm/hr
D. 40 mm/hr

The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is_________________?

A. partially separate system
B. combined system
C. separate system
D. partially combined system

Sewerage system is usually designed for_________________?

A. 50 years
B. 25 years
C. 10 years
D. 75 years

The hydraulic mean depth (HMD. for an egg-shaped sewer flowing two-third full is_______________?

A. less than HMD when flowing full
B. equal to HMD when flowing full
C. greater than HMD when flowing full
D. none of the above

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_________________?

A. 4000
B. 1000
C. 100000
D. 400000

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

A. separate system
B. partially combined system
C. combined system
D. partially separate system

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

A. intercepting sewer
B. lateral sewer
C. house sewer
D. submain sewer

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

A. reflux valve
B. air relief valve
C. sluice valve
D. pressure relief valve

Hardy cross method of analysis of distribution system________________?

1) involves successive trials
2) takes economic aspects into account
3) is time consuming

The correct answer is?

A. (1)and(2)
B. only (1)
C. (1) and (3)
D. all are correct

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

A. Hardy cross method
B. equivalent pipe method
C. circle method
D. electrical analysis method

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

A. dead end system
B. ring system
C. radial system
D. grid iron system

As compared to cast iron pipes, steel pipes are______________?

A. costlier
B. stronger
C. heavier
D. less susceptible to corrosion

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

A. sodium chloride
B. copper sulphate
C. sodium sulphate
D. calcium chloride

In lime-soda process________________?

A. only non-carbonate hardness is re-moved
B. only carbonate hardness is removed
C. lime reduces the carbonate hardness and soda-ash removes the non-carbo¬nate hardness
D. lime reduces the non-carbonate hard-ness and soda-ash removes the carbo¬nate hardness

As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is___________________?

A. smaller
B. same
C. larger
D. none of the above

Which of the following chemical compounds can be used for dechlorination of water ?

A. bleaching powder
B. carbon dioxide
C. sulphur dioxide
D. chloramines

Strength of Materials MCQs – Civil Engineering

The treatment of water with bleaching powder is known as________________?

A. super chlorination
B. prechlorination
C. dechlorination
D. hypochlorination

The process in which the chlorination is done beyond the break point is known as_________________?

A. post chlorination
B. prechlorination
C. super chlorination
D. break point chlorination

The disinfection efficiency of chlorine increases by_______________?

1) decreasing the time of contact
2) decreasing the temperature of water
3) increasing the temperature of water

The correct answer is ?
A. both (1) and (2)
B. only (1)
C. both (1) and (3)
D. only (3)

Double filtration is used_______________?

A. to increase the filtration slow sand filters capacity of swimming
B. for isolated buildings like pools, hotels etc
C. to increase the filtration rapid sand filters capacity of
D. all of the above

Disinfection of water results in______________?

A. removal of hardness
B. removal of turbidity
C. killing of disease bacteria
D. complete sterilisation

Period of cleaning of slow sand filters is about________________?

A. 10-12 days
B. 24 – 48 hours
C. 2-3 months
D. 1-2 year

Cleaning is done by________________?

1) scraping and removal in filters slow sand
2) back washing in slow sand filters
3) scraping and removal in filters rapid sand
4) back washing in rapid sand filters

The correct answer is

A. (2) and (3)
B. (1) and (2)
C. (1) and (4)
D. (2) and (4)

Air binding phenomena in rapid sand filters occur due to_________________?

A. excessive negative head
B. low temperature
C. higher turbidity in the effluent
D. mud ball formation

As compared to rapid sand filters, slow sand filters give______________?

1) slower filtration rate
2) higher filtration rate
3) lesser efficiency in removal of bacteria
4) higher efficiency in removal of bacteria

The correct answer is?

A. (2) and (3)
B. (1) and (2)
C. (1) and (4)
D. (2) and (4)

The rate of filtration in slow sand filters in million litres per day per hectare is about_____________?

A. 50 to 60
B. 500 to 600
C. 100 to 150
D. 1400 to 1500

The chemical most commonly used to increase speed of sedimentation of sewage is_______________?

A. copper sulphate
B. sulphuric acid
C. lime
D. sodium permanganate

The detention period in coagulation tanks is usually kept as_______________?

A. 30 to 45 minutes
B. 1 to 2 minutes
C. 2 to 6 hours
D. 2 to 6 days

The amount of coagulant needed for coagulation of water increases with_______________?

1) increase in turbidity of water
2) decrease in turbidity of water
3) increase in temperature of water
4) decrease in temperature of water

The correct answer is?

A. (2) and (3)
B. (1)and (4)
C. (1) and (2)
D. (2) and (4)

Theory Of Structures Mcqs Latest – Civil Engineering Mcqs

For a given discharge, the efficiency of sedimentation tank can be increased by______________?

A. decreasing the depth of tank
B. increasing the depth of tank
C. increasing the surface area of tank
D. decreasing the surface area of tank

The settling velocity of a particle in a sedimentation tank depends on__________________?

A. both depth and surface area of tank
B. surface area of tank
C. depth of tank
D. none of the above

The overflow rate for plain sedimentation tanks is about__________________?

A. 500 to 750 litres/hour/ m2
B. 1250 to 1500 litres/hour/m2
C. 1000 to 1250 litres/hour/ m2
D. 1500 to 2000 litres/hour/m2

The settling velocity of a particle in a sedimentation tank increases if_________________?

A. the depth of tank is decreased
B. the surface area of tank is increased
C. particle size is decreased
D. none of the above

Hydraulics And Fluid Mechanics Mcqs Latest

The velocity of flow of water in a sedimentation tank is about__________________?

A. 15 to 30 cm/sec.
B. 5 to 10 cm/sec.
C. 15 to 30 cm/minute
D. 15 to 30 cm/hour

The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about______________?

A. 0.5 to 1.0 ppm
B. 0.05 to 0.5 ppm
C. 0.01 to 0.05 ppm
D. 1.0 to 5.0 ppm

Orthotolidine test is used for determination of________________?

A. biochemical oxygen demand
B. residual chlorine
C. dissolved oxygen
D. dose of coagulant

On standard silica scale, the turbidity in drinking water should be limited to_______________?

A. 10 ppm
B. 30 ppm
C. 20 ppm
D. 50 ppm

Which of the following values of pH represents a stronger acid?

A. 2
B. 7
C. 5
D. 10

Standard EDTA (ethylene diamine tetra acetic aciD. solution is used to determine the_______________?

A. hardness in water
B. dissolved oxygen in water
C. turbidity in water
D. residual chlorine in water

Ground water is usually free from________________?

A. suspended impurities
B. both suspended and dissolved impurities
C. dissolved impurities
D. none of the above

The maximum discharge of a tube-well is about_________________?

A. 500 litres/sec
B. 50 litres/sec
C. 5 litres/sec
D. 1000 litres/see

The phenolic compounds in public water supply should not be more than_______________?

A. 0.01 ppm
B. 0.1 ppm
C. 0.001 ppm
D. 0.0001 ppm

Which of the following is not a water borne disease ?

A. cholera
B. dysentery
C. typhoid
D. maleria

Select the correct relationship between porosity (N), specific yield (y) and specific retention (R)________________?

A. N = y + R
B. R = N + y
C. y = N + R
D. R > (N + y)

The suitable method of forecasting population for a young and rapidly increasing city is_________________?

A. incremental increase method
B. geometrical increase method
C. arithmetical increase method
D. graphical method

As compared to geometrical increase method of forecasting population, arithmetical increase method gives________________?

A. lesser value
B. same value
C. higher value
D. accurate value

If the average daily consumption of a city is 100,000 m3, the maximum daily consumption on peak hourly demand will be_______________?

A. 150000m3
B. 100000m3
C. 180000m3
D. 270000 m3

Which of the following causes a decrease in per ca-pita consumption ?

A. use of metering system
B. hotter climate
C. better standard of living of the people
D. good quality of water

Assertion A : The consumption of water increases with increase in the distribution pressure. Reason R : Higher distribution pressure causes more loss and waste of water. Select your answer according to the coding system given below?

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is false but R is true
D. A is true but R is false

The per capital consumption of a locality is affected by_________________?

1) climatic conditions
2) quality of water
3) distribution pressure

The correct answer is?

A. both (1) and (2)
B. only (1)
C. both (1) and (3)
D. all (1), (2) and (3)

The devices which are installed for drawing water from the sources are called______________?

A. aquiclude
B. aquifers
C. filters
D. intakes

If the coli form bacteria is present in a sample of water, then the coli form test to be conducted is_____________?

1) presumptive coli form test
2) confirmed coli form test
3) completed coli form test

The correct answer is ?

A. both (1) and (2)
B. only (1)
C. both (1) and (3)
D. all (1), (2) and (3)

Select the correct statement?

A. BOD does not depend on time
B. 5 day BOD is greater than 4 day BOD keeping other conditions same
C. 5 day BOD is less than 4 day BOD keeping other conditions same
D. 5 day BOD is the ultimate BOD

Civil Engineering MCQs – Environmental Engineering Mcqs Latest

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