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_______________?
A. BOD>COD>TOD
B. TOD>COD>BOD
C. TOD>BOD>COD
D. COD>BOD>TOD
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