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 hourly variation factor is usually taken as______________?
A. 1.5
B. 2.0
C. 1.8
D. 2.7
The distribution mains are designed for________________?
A. maximum hourly demand
B. maximum daily demand
C. average daily demand
D. maximum hourly demand on maxi¬mum day
The depression of water table in a well due to pumping will be maximum_______________?
A. at a distance R/2 from the well
B. close to the well
C. at a distance R from the well
D. none of the above
where R is the radius of influence
Hydraulics And Fluid Mechanics Mcqs Latest
The type of valve, which is provided on the suction pipe in a tube-well, is____________?
A. pressure relief valve
B. reflux valve
C. air relief valve
D. sluice valve
As compared to shallow-wells, deep wells have______________?
A. less depth
B. more depth
C. more discharge
D. less discharge
The polluted water is one which_______________?
A. is contaminated
B. consists of undesirable substances rendering it unfit for drinking and domestic use
C. is safe and suitable for drinking and domestic use
D. contains pathogenic bacteria
The most common cause of acidity in water is_______________?
A. carbon dioxide
B. hydrogen
C. oxygen
D. nitrogen
Alkalinity in water is expressed as milli-grams per litre in terms of equivalent_______________?
A. calcium carbonate
B. sodium carbonate
C. magnesium carbonate
D. calcium hydroxide
The maximum permissible limit for flouride in drinking water is______________?
A. 5 mg/litre
B. 1.5 mg/litre
C. 0.1 mg/litre
D. 10 mg/litre
Turbidity is measured on_______________?
A. standard silica scale
B. standard platinum scale
C. standard cobalt scale
D. platinum cobalt scale
Strength of Materials MCQs – Civil Engineering
Residual chlorine in water is determined by________________?
A. orthotolidine method
B. starch iodide method
C. both (A) and (B)
D. none of the above
If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to________________?
A. total alkalinity
B. total hardness – total alkalinity
C. total hardness
D. non carbonate hardness
The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of________________?
A. 100 mg/litre
B. 10 mg/litre
C. 1 mg/litre
D. 1000 mg/litre
The length of rectangular sedimentation tank should not be more than_______________?
A. 2B
B. B
C. 4B
D. 8B
where B is the width of the tank
Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about_______________?
A. 50
B. 10 to 25
C. 75
D. 100
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
The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally_______________?
A. less and less
B. less and more
C. more and less
D. more and more
Alum as a coagulant is found to be most effective when pH range of water is______________?
A. 4 to 6
B. 2 to 4
C. 6 to 8
D. 8 to 10
MCQs of Civil Engineering Latest
The alum, when added as a coagulant in water_______________?
A. does not affect pH value of water
B. does not require alkalinity in water for flocculation
C. increases pH value of water
D. decreases pH value of water
In water treatment, rapid gravity filters are adopted to remove_______________?
A. dissolved solids and dissolved gases
B. dissolved organic substances
C. floating solids and dissolved inorganic solids
D. bacteria and colloidal solids
The effective size of sand particles used in slow sand filters is_______________?
A. 0.25 to 0.35 mm
B. 0.60 to 1.00 mm
C. 0.35 to 0.60 mm
D. 1.00 to 1.80 mm
Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters. Reason R : The sand used in slow sand filters is finer than that in rapid sand filters. Select your answer based on 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 percentage of filtered water, which is used for backwashing in rapid sand filters, is about______________?
A. 0.4 to 1.0
B. 0.2 to 0.4
C. 2 to 4
D. 5 to 7
The rate of Alteration of pressure filters is_________________?
A. equal to that of slow sand filters
B. in between the filtration rate of slow sand filters and rapid sand filters
C. greater than that of rapid sand filters
D. less than that of slow sand filters
Chlorine demand of water is equal to________________?
A. residual chlorine
B. applied chlorine
C. sum of applied and residual chlorine
D. difference of applied and residual chlorine
The percentage of chlorine in fresh bleaching powder is about________________?
A. 20 to 25
B. 10 to 15
C. 30 to 35
D. 40 to 50
The suitable method for disinfection of swimming pool water is________________?
A. ultra violet rays treatment
B. by using potassium permanganate
C. lime treatment
D. chlorination
In chlorination, with the rise in temperature of water, death rate of bacteria____________?
A. increases
B. remains unaffected
C. decreases
D. none of the above
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________________?
A. 9800
B. 9500
C. 10100
D. 10920
Disinfection efficiency is________________?
A. reduced at higher pH value of water
B. increased at higher pH value of water
C. unaffected by pH value of water
D. highest at pH value equal to 7
The major disadvantage of lime soda process of water softening is that_________________?
A. the effluent cannot be reduced to zero hardness
B. huge amount of precipitate is formed which creates a disposal problem
C. it is unsuitable for turbid and acidic water
D. it is unsuitable for softening the water of excessive hardness
Activated carbon is used for_____________?
A. removing hardness
B. disinfection
C. removing odours
D. removing corrosiveness
The suitable layout of a distribution system for irregularly growing town is_______________?
A. dead end system
B. radial system
C. grid iron system
D. ring system
The suitable layout of distribution system for a city with roads of rectangular pattern is______________?
A. grid iron system
B. ring system
C. dead end system
D. radial system
The method of analysis of distribution system in which the domestic supply is neglected and fire demand is considered is________________?
A. circle method
B. electrical analysis method
C. equivalent pipe method
D. Hardy cross method
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_______________?
A. safety valve
B. sluice valve
C. check valve
D. scour valve
Scour valves are provided ______________?
A. at every summit of rising mains
B. at every depression and dead ends to drain out the waste water that may collect there
C. at the foot of rising main along the slope to prevent back running of water
D. at street corners to control the flow of water
A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called________________?
A. house sewer
B. main sewer
C. lateral sewer
D. submain sewer
Average rate of water consumption perhead per day as per Indian Standard is______________?
A. 165 litres
B. 135 litres
C. 100 litres
D. 200 litres
Which of the following sewers is preferred for combined system of sewage ?
A. rectangular sewer
B. egg shaped sewer
C. circular sewer
D. none of the above
The water carriage system of collection of waste product________________?
A. creates hygenic problem
B. requires treatment before disposal
C. is cheaper in initial cost than dry conservancy system
D. all of the above
The time of concentration is defined as_______________?
A. the time required for flow of water in sewer to the point under consideration
B. the time taken by rainfall water to run from most distant point of water shed to the inlet of sewer
C. sum of (A) and (B)
D. difference of (A) and (B)
The self cleansing velocity for all sewers in India is usually_________________?
A. 1.5 m/sec to 2.0 m/sec
B. 1.0 m/sec to 1.2 m/sec
C. less than 1.0 m/sec
D. 3.0 m/sec to 3.5 m/sec
The design discharge for the separate sewer system shall be taken as_____________?
A. equal to dry weather flow (DWF)
B. 3 x DWF
C. 2 x DWF
D. 6 x DWF
The minimum and maximum diameters of sewers shall preferably be_________________?
A. 30 cm and 450 cm
B. 15 cm and 300 cm
C. 15 cm and 100 cm
D. 60 cm and 300cm
Most suitable section of sewer in separate sewage system is________________?
A. modified egg shaped section
B. circular section
C. standard form of egg shaped sewer
D. rectangular section
The velocity of flow does not depend on_______________?
A. roughness of sewer
B. length of sewer
C. hydraulic mean depth of sewer
D. grade of sewer
Engineering Economy MCQs – Civil Engineering
The effect of increasing diameter of sewer on the self cleansing velocity is_____________?
A. fluctuating
B. to increase it
C. to decrease it
D. nil
The type of sewer which is suitable for both combined and separate system is_____________?
A. horse-shoe type sewer
B. egg shaped sewer
C. circular sewer
D. semi-elliptical sewer
The pathogens can be killed by_______________?
A. oxidation
B. chlorination
C. nitrification
D. none of the above
Sewage treatment units are normally designed for______________?
A. 30-40 years
B. 15-20 years
C. 5-10 years
D. 40-50 years
Standard BOD is measured at________________?
A. 25°C- 3day
B. 20°C – 1day
C. 20°C – 5day
D. 30°C- 5day
The rate of BOD exerted at any time is_____________?
A. inversely proportional to BOD satisfied
B. directly proportional to BOD remain-ing
C. directly proportional to BOD satisfied
D. inversely proportional to BOD re-maining
In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be___________?
A. 300 ppm
B. 200 ppm
C. 100 ppm
D. 400 ppm
Civil Engineering MCQs – Hydraulics and Fluid Mechanics Mcqs Latest
The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________?
A. infinite
B. 100
C. 1
D. zero
Facultative bacteria are able to work in________________?
A. absence of oxygen only
B. presence of oxygen only
C. presence as well as in absence of oxygen
D. presence of water
Sewerage system is designed for_______________?
A. minimum flow only
B. maximum flow only
C. average flow only
D. maximum and minimum flow
Laying of sewers is usually done with the help of________________?
A. a compass
B. a theodolite
C. sight rails and boning rods
D. a plane table
If the sewage contains grease and fatty oils, these are removed in_________________?
A. detritus tanks
B. grit chambers
C. skimming tanks
D. sedimentation tanks
Which of the following unit works in anaerobic conditions ?
A. sludge digestion tank
B. trickling filters
C. activated sludge treatment
D. sedimentation tank
The maximum efficiency of BOD removal is achieved in______________?
A. aerated lagoons
B. oxidation ditch
C. oxidation pond
D. trickling filters
In facultative stabilization pond, the sewage is treated by________________?
A. algae only
B. aerobic bacteria only
C. dual action of aerobic bacteria and anaerobic bacteria
D. sedimentation
Civil Engineering MCQs – Theory Of Structures Mcqs Latest
Composting and lagooning are the methods of_______________?
A. sedimentation
B. sludge disposal
C. sludge digestion
D. filtration
For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as___________________?
A. 8.5 to 10.0
B. 6.5 to 8.0
C. 4.5 to 6.0
D. 10.5 to 12.0
For normal sludge, the value of sludge index for Indian conditions is________________?
A. 50 to 150
B. 0 to 50
C. 150 to 350
D. 350 to 500
For the same solid content, if the quantity of sludge with moisture content of 98% is X, then the quantity of sludge with moisture content of 96% will be__________________?
A. X
B. X/2
C. X/4
D. 2X
The gas from sludge digestion tank is mainly composed of __________________?
A. carbon dioxide
B. nitrogen
C. hydrogen sulphide
D. methane
The process of lagooning is primarily a means of________________?
A. increasing the capacity of storage re-servoirs
B. disposing of sludge
C. reducing the excessive flow in sewers
D. increasing flow of sewage through imhoff tanks
A pipe which is installed in the house drainage to preserve the water seal of traps is called______________?
A. waste pipe
B. antisiphonage pipe
C. vent pipe
D. soil pipe
Most of the bacteria in sewage are______________?
A. pathogenic
B. saprophytic
C. parasitic
D. anaerobic