McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 1. |
is required for preliminary studies of various aspects of a work or project. |
| A. | supplementary estimate |
| B. | plinth area estimate |
| C. | revised estimate |
| D. | abstract estimate |
| Answer» D. abstract estimate | |
| Explanation: to decide the financial position and policy for administrative sanction by the competent administrative authority. in case of | |
| 2. |
Per kilometre basis depending on the nature of road, for 10 km of a state highway approx. cost @ Rs. 50000/- per 1 km works out as Rs. 5 lakh. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: per kilometre basis depending on the nature of road, for 10 km of a state highway approx. cost @ rs. 500000/- per 1 km works out as rs. 50 lakh. | |
| 3. |
Approx. cost of a bridge of 3 spans of 50 m each span @Rs.30000/- per running m of span comes to 3*50*30000 = Rs. 45 lakhs. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: per running metre of span depending on the roadway, nature and depth of foundation, type of structure, etc. for small culverts approx. cost may also be per number of culverts of different spans. | |
| 4. |
Approximate cost of sewerage project for a population of one Rs. 10/- head works out as Rs. 10 lakh. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: approximate cost of sewerage project for a population of one rs. 100/- head works out as rs. 100 lakhs. | |
| 5. |
is prepared on the basis of plinth area of building, the rate being deducted from the cost of similar building having similar specification, heights and construction, in the locality. |
| A. | cube rate estimate |
| B. | supplementary estimate |
| C. | maintenance estimate |
| D. | plinth area estimate |
| Answer» D. plinth area estimate | |
| Explanation: plinth area estimate is calculated by finding the plinth area of the building and multiplying by the plinth area rate. the plinth area should be calculated for the covered area by taking external dimension of the building at the floor level. | |
| 6. |
is the amount provided in the estimate and bill of quantities for some specialised work to be done by a specialised firm; whose details are not known at the time of preparing estimate. |
| A. | prime cost |
| B. | provisional sum |
| C. | capital cost |
| D. | building cost index |
| Answer» B. provisional sum | |
| Explanation: the work like installation of refrigerating machine; installation of lift, air conditioning, etc., for which full information | |
| 7. |
estimate is a detailed estimate and is prepared to maintain the structure or work in proper order and safe condition. |
| A. | supplementary and revised estimate |
| B. | maintenance estimate |
| C. | item rate estimate |
| D. | revised estimate |
| Answer» B. maintenance estimate | |
| Explanation: for building; this includes white washing, colour washing, painting, minor repairs etc. for road works the a.r. estimate provides for patch repairing, renewals, repair of culverts, etc. | |
| 8. |
A large work or project may consists of several building or small works and each of these work is known as |
| A. | sub-work |
| B. | sub-project |
| C. | sub-head |
| D. | sub-construction |
| Answer» A. sub-work | |
| Explanation: detailed estimate of each sub- work is prepared separately and accounts of expenditure are kept sub-work wise. | |
| 9. |
The term is used to denote a procedure of costing or valuing an item of work on the basis of actual labourers and materials required. |
| A. | prime cost |
| B. | hour-work |
| C. | day-work |
| D. | sub-work |
| Answer» C. day-work | |
| Explanation: certain items of work which cannot be measured as- a design in the plaster work, front architectural finish of a building, work under water, etc. are valued and paid by ‘day work’. in such cases the schedule of rates of materials and different classes of labourers likely to be engaged in th work should be included in the tender and in contract agreement. | |
| 10. |
The surface of the highway pavement should be designed to allow |
| A. | high rolling resistance |
| B. | low rolling resistance |
| C. | no rolling resistance |
| D. | very high rolling resistance |
| Answer» B. low rolling resistance | |
| Explanation: the surface of highway pavement should be designed to allow no rolling resistance for safety purposes. | |
| 11. |
The soil becomes weak in |
| A. | summer |
| B. | winter |
| C. | rainy season |
| D. | spring season |
| Answer» C. rainy season | |
| Explanation: the soil becomes weak in rainy season due to the absorption of water in the soil. | |
| 12. |
Which of the following pavement has greater life? |
| A. | bituminous pavements |
| B. | cement concrete pavements |
| C. | gravel roads |
| D. | earth roads |
| Answer» B. cement concrete pavements | |
| Explanation: the cement concrete roads have a greater life than remaining all pavements which may last even up to 100 years. | |
| 13. |
Which of the following requirement is given most importance in highway design? |
| A. | structural |
| B. | functional |
| C. | seasonal |
| D. | maintenance |
| Answer» A. structural | |
| Explanation: the structural design like highway speed, geometric design is given the most importance in design. | |
| 14. |
The surface of the pavement should be |
| A. | smooth |
| B. | rough |
| C. | sufficient enough to resist skid |
| D. | very rough |
| Answer» C. sufficient enough to resist skid | |
| Explanation: the surface of the pavement should be sufficient enough to resist the skid of vehicles by using friction. | |
| 15. |
The drainage layer is |
| A. | surface course |
| B. | sub base |
| C. | base |
| D. | sub grade |
| Answer» B. sub base | |
| Explanation: the drainage layer is the sub base layer that is used to collect the water from pavement surfaces to send to ground water. | |
| 16. |
The maximum stress sustained by concrete pavements in kg/cm2 is |
| A. | 40 |
| B. | 45 |
| C. | 50 |
| D. | 55 |
| Answer» B. 45 | |
| Explanation: the concrete pavements are designed to sustain a stress of 45kg/cm2 which is the maximum limit. | |
| 17. |
The ICPB type of pavement uses |
| A. | concrete paver blocks |
| B. | fly ash |
| C. | ggbs |
| D. | rmc |
| Answer» A. concrete paver blocks | |
| Explanation: the icpb uses mostly interlocking concrete paver blocks for the construction of pavements. | |
| 18. |
The ICPB may be used in |
| A. | water logged areas |
| B. | parks |
| C. | footpaths |
| D. | highways |
| Answer» A. water logged areas | |
| Explanation: the inter locking concrete paver blocks may be used in water logged areas to absorb the water and send it to the ground water. | |
| 19. |
The maximum length of vehicle that can be used on Indian roads is |
| A. | 11 |
| B. | 12 |
| C. | 13 |
| D. | 14 |
| Answer» B. 12 | |
| Explanation: the maximum length of a vehicle in india is restricted as per the rotary design of the highway which is maximum 12m. | |
| 20. |
3 SEPTIC TANK |
| A. | 12 |
| B. | 10 |
| C. | 8 |
| D. | 15 |
| Answer» D. 15 | |
| Explanation: the design life of flexible pavement is considered as 15 years, it may last even further if properly maintained. | |
| 21. |
The design period of cement concrete road is taken as |
| A. | 20 |
| B. | 25 |
| C. | 30 |
| D. | 35 |
| Answer» C. 30 | |
| Explanation: the design period of cement roads is usually taken as 30 years but they can even last longer if properly maintained and designed. | |
| 22. |
In India the flexible pavement is designed as per |
| A. | msa |
| B. | ksa |
| C. | csa |
| D. | fsa |
| Answer» A. msa | |
| Explanation: the flexible pavements are designed as per irc 37 which uses msa to specify the unit of the vehicles. | |
| 23. |
Which of the following materials is not used in the construction of a septic tank? |
| A. | concrete |
| B. | rubber |
| C. | fibreglass |
| D. | plastic |
| Answer» B. rubber | |
| Explanation: a septic tank is a watertight chamber made of brick-work, concrete, fiberglass, pvc or plastic, through which black water from the cistern or pour-flush toilets and grey water through a pipe from inside a building or an outside toilet flows for primary treatment. | |
| 24. |
Septic tank is a small scale treatment unit. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: the septic tank is the most common small-scale decentralized unit for grey water and black water from cistern or pour-flush toilets. it is basically a sedimentation tank. | |
| 25. |
The shape of the tank is circular. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: the shape of the septic tank can be rectangular or cylindrical. septic tanks are used for wastewater with a high content of settleable solids, typically for effluent from domestic sources. | |
| 26. |
The heavy particles in the tank |
| A. | float |
| B. | sink into the bottom |
| C. | separated using magnetic methods |
| D. | flow along liquid |
| Answer» B. sink into the bottom | |
| Explanation: liquid flows through the top and heavy particles sink to the bottom, while scum floats to the top. over time, the solids that settle to the bottom are degraded anaerobically. | |
| 27. |
The scum formed in the tank |
| A. | flows |
| B. | gets dissolved |
| C. | sink into the bottom |
| D. | floats on top |
| Answer» D. floats on top | |
| Explanation: the scum formed in the tanks floats over the top. over time, the solids that settle to the bottom are degraded anaerobically. | |
| 28. |
Which of the following methods are not used for the dispersion of the effluent out of a septic tank? |
| A. | wetlands |
| B. | soak pit |
| C. | evapo-transpiration mound |
| D. | leach field |
| Answer» A. wetlands | |
| Explanation: by using a soak pit, evapo- transpiration mound or leach field, the effluent of the septic tank must be dispersed or transported to another treatment technology via a solids-free sewer, simplified sewer or solids-free sewer. | |
| 29. |
During the disposal of the sludge, it must be |
| A. | liquefied |
| B. | dried |
| C. | burned |
| D. | fluidized |
| Answer» B. dried | |
| Explanation: the sludge can be dried in planted or unplanted drying beds, settling or thickening ponds. if the sludge is dried or composted, it can be applied in agriculture as a valuable nutrient. | |
| 30. |
The first chamber in a septic tank should be at least of the total length. |
| A. | 10 % |
| B. | 20 % |
| C. | 35 % |
| D. | 50 % |
| Answer» D. 50 % | |
| Explanation: the first chamber should be at least 50% of the total length and when there are only two chambers, it should be two thirds of the total length. most of the solids settle out in the first chamber. | |
| 31. |
Which of the following reasons is correct with respect to the need of providing baffle walls? |
| A. | mixing of scum and wastewater |
| B. | settling of heavy particles |
| C. | increase velocity of the liquid |
| D. | prevent scum and solids from escaping |
| Answer» D. prevent scum and solids from escaping | |
| Explanation: the baffle or the separation between the chambers is to prevent scum and solids from escaping with the effluent. a t- shaped outlet pipe, the lower arm of which divides 30 cm below water level, further reduces the scum and solids that are discharged. | |
| 32. |
What are the product gases of anaerobic digestion? |
| A. | carbon-dioxide and methane |
| B. | methane and oxygen |
| C. | oxygen and carbon-dioxide |
| D. | nitrogen and methane |
| Answer» A. carbon-dioxide and methane | |
| Explanation: over time, anaerobic bacteria and micro-organisms start to digest the settled sludge anaerobically, transforming it into co2 and ch4 and some heat. optimal physical treatment by sedimentation takes place when the flow is smooth and undisturbed. | |
| 33. |
What is the mixture of methane and carbon-dioxide of anaerobic digestion called? |
| A. | waste gases |
| B. | poisonous gas |
| C. | biogas |
| D. | carbo-methane |
| Answer» C. biogas | |
| Explanation: the mixture of methane and carbon-dioxide of an anaerobic digestion is called biogas. over time, anaerobic bacteria and micro-organisms start to digest the settled sludge anaerobically, transforming it into co2 and ch4 and some heat. | |
| 34. |
The term “septic” refers to |
| A. | anaerobic bacterial environment that develops in the tank |
| B. | refers to safety and precaution |
| C. | drainage of waste materials |
| D. | aerobic bacterial environment that develops in the tank |
| Answer» A. anaerobic bacterial environment that develops in the tank | |
| Explanation: the term “septic” refers to the anaerobic bacterial environment that develops in the tank which decomposes or mineralizes the waste discharged into the tank. septic tanks can be coupled with other onsite wastewater treatment units such as biofilters or aerobic systems involving artificially forced aeration. | |
| 35. |
Septic tank is usually consists of brick wall in cement not less than |
| A. | 20 cm |
| B. | 100 cm |
| C. | 80 cm |
| D. | 200 cm |
| Answer» A. 20 cm | |
| Explanation: septic tank is usually consists of brick wall in cement not less than 20cm(9”) thick and the foundation floor are of cement concrete 1:3:6 or 1:2:4. both inside and outside faces of wall and floor are plastered with a minimum thickness of 12mm thick cement mortar 1:3 and all inside corners are rounded. | |
| 36. |
A is a type of toilet that collects human faeces in a hole in the ground. |
| A. | gutter |
| B. | septic tank |
| C. | pit toilet |
| D. | latrine |
| Answer» C. pit toilet | |
| Explanation: a pit latrine or pit toilet is a type of toilet that collects human faeces in a hole in the ground. they use either no water or one to three litres per flush with pour-flush pit latrines. when properly built and maintained they can decrease the spread of disease by reducing the amount of human faeces in the environment from open defecation. this decreases the transfer of pathogens between faeces and food by flies. | |
| 37. |
The size of the faeces drop hole in the floor or slab should not be larger than |
| A. | 5m |
| B. | 25 cm |
| C. | 45 cm |
| D. | 250 mm |
| Answer» B. 25 cm | |
| Explanation: the user positions themself over the small drop hole during use. the size of the feces drop hole in the floor or slab should not be larger than 25 centimeters (9.8 inches) to prevent children falling in. light should be prevented from entering the pit to reduce access by flies. this requires the use of a lid to cover the hole in the floor when not in use. however, in practice, such a lid is not commonly used as it is easy to lose it or for the lid to get very filthy. | |
| 38. |
As of 2013 pit latrines are used by an estimated people. |
| A. | 1.77 billion |
| B. | 2.77 million |
| C. | 1.77 billion |
| D. | 4.66 billion |
| Answer» C. 1.77 billion | |
| Explanation: this is mostly in the developing world as well as in rural and wilderness areas. in 2011 about 2.5 billion people did not have access to a proper toilet and one billion resort to open defecation in their surroundings. southern asia and sub- | |
| 39. |
As a very general guideline it is recommended that the bottom of the pit should be at least above groundwater level. |
| A. | 0.5 m |
| B. | 2 m |
| C. | 12 m |
| D. | 20 m |
| Answer» B. 2 m | |
| Explanation: as a very general guideline it is recommended that the bottom of the pit should be at least 2 m above groundwater level, and a minimum horizontal distance of 30 m between a pit and a water source is normally recommended to limit exposure to microbial contamination.[1]however, no general statement should be made regarding the minimum lateral separation distances required to prevent contamination of a well from a pit latrine. for example, even 50 m lateral separation distance might not be sufficient in a strongly karstified system with a down gradient supply well or spring, while 10 m lateral separation distance is completely sufficient if there is a well developed clay cover layer and the annular space of the groundwater well is well sealed. | |
| 40. |
A houses the squatting pan or toilet seat and provides privacy and protection from the weather for the user. |
| A. | roof |
| B. | terrace |
| C. | shade |
| D. | shelter |
| Answer» D. shelter | |
| Explanation: a shelter, shed, small building or “super-structure” houses the squatting pan or toilet seat and provides privacy and | |
| 41. |
The theory of plasticity pertaining to soils is based on |
| A. | mohr’s theory |
| B. | rankine’s method |
| C. | mohr-coulomb theory |
| D. | none of the mentioned |
| Answer» A. mohr’s theory | |
| Explanation: the theory of plasticity pertaining to soils is based on mohr’s theory of rupture. | |
| 42. |
On designing retaining walls it is necessary to take care of exerted by soil mass. |
| A. | erosion |
| B. | lateral pressure |
| C. | surcharge |
| D. | lateral stress |
| Answer» B. lateral pressure | |
| Explanation: in the designing of retaining walls; sheet piles or other earth-retaining structures, it is necessary to compute the lateral pressure exerted by the retained mass of soil. | |
| 43. |
The material retained or supported by the retaining structure is called |
| A. | surcharge |
| B. | support wall |
| C. | back fill |
| D. | all of the mentioned |
| Answer» C. back fill | |
| Explanation: the material retained or supported by the structure is called backfill which may have its top surface horizontal or inclined. | |
| 44. |
The coefficient of earth pressure when the soil is at equilibrium is |
| A. | σv /σh |
| B. | σh /σv |
| C. | σv × σh |
| D. | σ1 / σ3 |
| Answer» B. σh /σv | |
| Explanation: when the soil is at elastic equilibrium(i.e. at rest) the ratio of horizontal to vertical stress is called the co-efficient of earth pressure of rest. | |
| 45. |
The computation of stress in plastic equilibrium is based on |
| A. | theory of plasticity |
| B. | mohr’s theory of rupture |
| C. | rankine’s theory |
| D. | all of the mentioned |
| Answer» A. theory of plasticity | |
| Explanation: the theory on which the computation of the stress in a state of plastic equilibrium is based is called the theory of plasticity. | |
| 46. |
The wedge-shaped portion of the backfill tending to move with the wall is called |
| A. | wedge fall |
| B. | active fall |
| C. | failure wedge |
| D. | none of the mentioned |
| Answer» C. failure wedge | |
| Explanation: during the active state, the wall moves away from backfill and a certain portion of the backfill in wedged-shaped tend to move which is called a failure wedge. | |
| 47. |
In active stress, the major principal stress σ1 acting on the wall will be in plane. |
| A. | vertical |
| B. | horizontal |
| C. | inclined |
| D. | zero |
| Answer» B. horizontal | |
| Explanation: in an active state, the major principal stress σ1 is vertical and the minor principal stress σ3 is horizontal. | |
| 48. |
The plastic state of stress was proposed by |
| A. | mohr |
| B. | rankine |
| C. | coulomb |
| D. | darcy |
| Answer» B. rankine | |
| Explanation: the plastic state of stress when the failure is imminent was investigated by rankine in 1860. | |
| 49. |
The position of the backfill lying above the horizontal plane at the top of wall is called |
| A. | active state |
| B. | plasticity |
| C. | surcharge |
| D. | slip lines |
| Answer» C. surcharge | |
| Explanation: the position of the backfill lying above a horizontal plane at the elevation of the top of a wall is called the surcharge, and its inclination to the horizontal is called surcharge angle β. | |
| 50. |
A structure that allows water to flow under a road, railroad, trail, or similar obstruction from one side to the other side is called as |
| A. | drainage |
| B. | bridges |
| C. | tunnel |
| D. | culverts |
| Answer» D. culverts | |
| Explanation: culverts are commonly used both as cross-drains for ditch relief and to pass water under a road at natural drainage and stream crossings. a culvert may be a bridge-like structure designed to allow vehicle or pedestrian traffic to cross over the waterway while allowing adequate passage for the water. | |
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