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MCQOPTIONS
This section includes 5814 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 2151. |
If soil is dried beyond its shrinkage limit, it will show : |
| A. | Large volume change |
| B. | Moderate volume change |
| C. | Low volume change |
| D. | No volume change |
| Answer» E. | |
| 2152. |
The main constituents of gas generated during the anaerobic digestion of sewage sludge are : |
| A. | carbon dioxide and methane |
| B. | methane and ethane |
| C. | carbon dioxide and carbon monoxide |
| D. | carbon monoxide and nitrogen |
| Answer» B. methane and ethane | |
| 2153. |
Two samples of water A and B have pH values of 4.4 and 6.4 respectively. How many times more acidic sample A is than sample B ? |
| A. | 0 |
| B. | 50 |
| C. | 100 |
| D. | 200 |
| Answer» D. 200 | |
| 2154. |
Rapid curing cut back bitumen is produced by blending bitumen with |
| A. | Kerosene |
| B. | Benzene |
| C. | Diesel |
| D. | Petrol |
| Answer» E. | |
| 2155. |
Reaction at support b of the structure is |
| A. | <i>P</i> |
| B. | <i>P</i> |
| C. | <span class="root">2</span> |
| D. | <img src="/_files/images/civil-engineering/gate-exam-questions/889-52-1.png"> |
| E. | <img src="/_files/images/civil-engineering/gate-exam-questions/885-4-1.png"> |
| Answer» B. <i>P</i> | |
| 2156. |
The superelevation needed for a vehicle travelling at a speed of 60 kmph on a curve of radius 128 m on a surface with a coefficient of friction of 0.15 is : |
| A. | 0.71 |
| B. | 0.81 |
| C. | 0.91 |
| D. | 0.61 |
| Answer» B. 0.81 | |
| 2157. |
Presence of excess nitrates in river water indicates : |
| A. | recent pollution of water with sewage |
| B. | past pollution of water with sewage |
| C. | immediate pollution of water with sewage |
| D. | no pollution of water with sewage |
| Answer» C. immediate pollution of water with sewage | |
| 2158. |
A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q. A weight W is dropped vertically from a height h(< L) on to the flange. The axial stress in the rod can be reduced by |
| A. | increasing the length of the rod |
| B. | decreasing the length of the rod |
| C. | decreasing the area of cross-section of the rod |
| D. | increasing the modulus of elasticity of the material |
| Answer» B. decreasing the length of the rod | |
| 2159. |
A linear relationship is observed between speed and density on a certain section of a highway. The free flow speed is observed to be 80 km per hour and the jam density is estimated as 100 vehicles per km length. Based on the above relationship, the maximum flow expected on this section and the speed at the maximum flow will respectively be |
| A. | 8000 vehicles per hour and 80 km per hour |
| B. | 8000 vehicles per hour and 25 km per hour |
| C. | 2000 vehicles per hour and 80 km per hour |
| D. | 2000 vehicles per hour and 40 km per hour |
| Answer» E. | |
| 2160. |
The total length (in km) of the existing National Highways in India is in the range of |
| A. | 15, 000 to 25, 000 |
| B. | 25, 000 to 35, 000 |
| C. | 35, 000 to 45, 000 |
| D. | 45, 000 to 55, 000 |
| Answer» C. 35, 000 to 45, 000 | |
| 2161. |
A point load of 700 kN is applied on the surface of thick layer of clay. Using Boussinesq's elastic analysis, the estimated vertical stress ( v) at a depth of 2 m and a radial distance of 1.0 m from the point of application of the load, is : |
| A. | 47.5 kPa |
| B. | 47.6 kPa |
| C. | 47.7 kPa |
| D. | 47.8 kPa |
| Answer» E. | |
| 2162. |
A propped cantilever beam of span L, is loaded with uniformly distributed load of intensity w/unit length, all through the span. Bending moment at the fixed end is, |
| A. | <img src="/_files/images/civil-engineering/gate-exam-questions/896-112-1.png"> |
| B. | <img src="/_files/images/civil-engineering/gate-exam-questions/896-112-2.png"> |
| C. | <img src="/_files/images/civil-engineering/gate-exam-questions/896-112-3.png"> |
| D. | <img src="/_files/images/civil-engineering/gate-exam-questions/896-112-4.png"> |
| Answer» B. <img src="/_files/images/civil-engineering/gate-exam-questions/896-112-2.png"> | |
| 2163. |
An outlet irrigates an area of 20 ha. The discharge (l/s) required at this outlet to meet the evapotranspiration requirement of 20 mm occurring uniformly in 20 days neglecting other field losses is |
| A. | 2.52 |
| B. | 2.31 |
| C. | 2.01 |
| D. | 1.52 |
| Answer» C. 2.01 | |
| 2164. |
The time for a clay layer to achieve 90% consolidation is 15 years. The time required to achieve 90% consolidation; if the layer were twice as thick, 3 times forr permeable and 4 times more compressible would be : |
| A. | 70 years |
| B. | 75 years |
| C. | 80 years |
| D. | 85 years |
| Answer» D. 85 years | |
| 2165. |
The consistency of a saturated cohesive soil is affected by |
| A. | water content |
| B. | particle size distribution |
| C. | density index |
| D. | coefficient of permeability |
| Answer» B. particle size distribution | |
| 2166. |
In a river, discharge is 173 m3/s; water surface slope is 1 in 6000; and stage at the gauge station is 10.0 m. If during a flood, the stage at the gauge station is same and the water surface slope is 1 in 2000, the flood discharge in m3/s, is approximately |
| A. | 371 |
| B. | 100 |
| C. | 519 |
| D. | 300 |
| Answer» E. | |
| 2167. |
The function of ballast in railaway tracks is to |
| A. | facilitate drainage |
| B. | serve as an elastic support for the track structure |
| C. | provide the necessary resilience against the dynamic effect of the loads |
| D. | all the above |
| Answer» E. | |
| 2168. |
The maximum allowable compressive stress corresponding to lateral buckling in a discretely laterally supported symmetrical I beam does not depend upon : |
| A. | the modulus of elasticity |
| B. | the radius of gyration about the minor axis |
| C. | the span length of the beam |
| D. | the ratio of overall depth of thickness of the flange |
| Answer» B. the radius of gyration about the minor axis | |
| 2169. |
In a reinforced concrete beam-column, the increase in the flexural strength along with the increase in the axial strength occurs |
| A. | beyond the elastic limit of the material |
| B. | when the yield of the tension reinforcement governs the strength |
| C. | when the crushing of the concrete in the compression zone governs the strength |
| D. | never |
| Answer» C. when the crushing of the concrete in the compression zone governs the strength | |
| 2170. |
A wastewater sample contains 10-5.6 mmol/l of OH ions at 25 C. The pH of this sample is |
| A. | 8.6 |
| B. | 8.4 |
| C. | 5.6 |
| D. | 5.4 |
| Answer» E. | |
| 2171. |
A foundation is considered as shallow if its depth is : |
| A. | less than 1 metre |
| B. | greater than its width |
| C. | equal to or less than its width |
| D. | greater than 1 metre |
| Answer» D. greater than 1 metre | |
| 2172. |
The soils most susceptible to liquefaction are : |
| A. | saturated dense sands |
| B. | saturated fine and medium sands of uniform particle size |
| C. | saturated clays of uniform size |
| D. | saturated gravels and cobbles |
| Answer» C. saturated clays of uniform size | |
| 2173. |
Presence of ifluoride in water greater than permissible level of 1.5 mg/l causes |
| A. | cardiovascular disease |
| B. | methemoglobinemia |
| C. | hepatitis |
| D. | dental fluorosis |
| Answer» E. | |
| 2174. |
A lysimeter is used to measure : |
| A. | infiltration |
| B. | evaporation |
| C. | evapotranspiration |
| D. | radiation |
| Answer» D. radiation | |
| 2175. |
When a retaining wall moves away from the backfill, the pressure exerted on the wall is termed as |
| A. | passive earth pressure |
| B. | swelling pressure |
| C. | pore pressure |
| D. | active earth pressure |
| Answer» E. | |
| 2176. |
The plastic modulus of a section is 4.8 x 10-4 m3. The shape factor is 1.2. The plastic moment capacity of the section is 120 kN.m. The yield stress of the material is |
| A. | 100 MPa |
| B. | 240 MPa |
| C. | 250 MPa |
| D. | 300 MPa |
| Answer» D. 300 MPa | |
| 2177. |
The force in the member DE of the truss shown in the below figure is, |
| A. | 100.0 kN |
| B. | zero |
| C. | 35.5 kN |
| D. | 25.0 kN |
| Answer» C. 35.5 kN | |
| 2178. |
Standard 5-day BOD of a waste water sample is nearly x% of the ultimate BOD, where x is |
| A. | 48 |
| B. | 58 |
| C. | 68 |
| D. | 78 |
| Answer» D. 78 | |
| 2179. |
A simply supported beam with an overhang is traversed by a unit concentrated moment from the left to the right as shown below The influence line for reaction at B is given by |
| A. | <img src="/_files/images/civil-engineering/gate-exam-questions/912-279-2.png"> |
| B. | <img src="/_files/images/civil-engineering/gate-exam-questions/912-279-3.png"> |
| C. | <img src="/_files/images/civil-engineering/gate-exam-questions/912-279-4.png"> |
| D. | zero everywhere. |
| Answer» B. <img src="/_files/images/civil-engineering/gate-exam-questions/912-279-3.png"> | |
| 2180. |
Generally the maximum deflection/span ratio of a steel member should not exceed |
| A. | <img src="/_files/images/civil-engineering/gate-exam-questions/891-60-1.png"> |
| B. | <img src="/_files/images/civil-engineering/gate-exam-questions/891-60-2.png"> |
| C. | <img src="/_files/images/civil-engineering/gate-exam-questions/891-60-3.png"> |
| D. | <img src="/_files/images/civil-engineering/gate-exam-questions/891-60-4.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/gate-exam-questions/891-60-4.png"> | |
| 2181. |
A continuous beam is loaded as shown in the figure below. Assuming a plastic moment capacity equal to MP, the minimum load at which the beam would collapse is |
| A. | <img src="/_files/images/civil-engineering/gate-exam-questions/916-320-2.png"> |
| B. | <img src="/_files/images/civil-engineering/gate-exam-questions/916-320-3.png"> |
| C. | <img src="/_files/images/civil-engineering/gate-exam-questions/916-320-4.png"> |
| D. | <img src="/_files/images/civil-engineering/gate-exam-questions/916-320-5.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/gate-exam-questions/916-320-4.png"> | |
| 2182. |
The disinfection efficiency of chlorine in water treatment |
| A. | is not dependent on pH value. |
| B. | is increased by increased pH values. |
| C. | remains constant at all pH values. |
| D. | is reduced by increased pH value. |
| Answer» E. | |
| 2183. |
If the shear force at a section of beam under bending is equal to zero then the bending moment at the section is |
| A. | zero |
| B. | maximum |
| C. | minimum |
| D. | minimum or maximum |
| Answer» C. minimum | |
| 2184. |
The following characteristics pertain to the sand filters used in water industry. Filtration rate is 1 to 4 m3 (m2 day).Typical duration of operation in one run is 24 to 72 hours.Operating cost is low. Which of the above characteristics pertain to slow sand filters ? |
| A. | I, II and III |
| B. | I and II |
| C. | II and III |
| D. | I and III |
| Answer» E. | |
| 2185. |
In deriving the equation for the hydraulic jump in a rectangular channel in terms of the conjugate depths and the initial Froude number. |
| A. | continuity equation and energy equation are used |
| B. | continuity equation and momentum equation are used |
| C. | equations of continuity, mementum and energy are used |
| D. | gradually varied flow equation is used |
| Answer» D. gradually varied flow equation is used | |
| 2186. |
A septic tank is |
| A. | an aerobic method of on site sewage treatment |
| B. | an anaerobic method of on site treatment |
| C. | a physical method of water treatment |
| D. | a physicochemical method of water treatment |
| Answer» C. a physical method of water treatment | |
| 2187. |
The members EJ and IJ of steel truss shown in the figure below are subjected to a temperature rise of 30 C. The coefficient of thermal expansion of steel is 0.000012 per C per unit length. The displacement (mm) of joint E relative to joint H along the direction HE of the truss, is |
| A. | 0.255 |
| B. | 0.589 |
| C. | 0.764 |
| D. | 1.026 |
| Answer» D. 1.026 | |
| 2188. |
Water flows at a depth of 0.1 m with a velocity of 6 m/s in a rectangular channel. The alternate dpeth is |
| A. | 0.30 m |
| B. | 0.40 m |
| C. | 0.86 m |
| D. | 0.81 m |
| Answer» E. | |
| 2189. |
An isochrone is a line on the basin map |
| A. | Joining raingauge stations having equal rainfall-duration |
| B. | Joining points having equal rainfall depth in a given time interval |
| C. | Joining points having equal time of travel of surface runoff to the catchment outlet |
| D. | Joining points which are at equal distance from the catchment outlet |
| Answer» D. Joining points which are at equal distance from the catchment outlet | |
| 2190. |
Chemical oxygen Demand (COD) of a sample is always greater than Biochemical Oxygen Demand (BOD) since it represents : |
| A. | biodegradable organic matter only |
| B. | biodegradable and non-biodegradable organic matter |
| C. | non-biodegradable organic matter |
| D. | inorganic matter |
| Answer» C. non-biodegradable organic matter | |
| 2191. |
According to Darcy's law for flow through porous media, the velocity is proportional to |
| A. | Effective stress |
| B. | hydraulic gradient |
| C. | cohesion |
| D. | stability number |
| Answer» C. cohesion | |
| 2192. |
The equation along a stream line holds true for : |
| A. | steady, frictionless, compressible fluid |
| B. | steady, uniform, incompressible fluid |
| C. | steady, frictionless, incompressible fluid |
| D. | unsteady incompressible fluid |
| Answer» C. steady, frictionless, incompressible fluid | |
| 2193. |
Factor of safety adopted by IS : 800 - 1984 while arriving at the permissible stress in axial compression, is : |
| A. | 2.00 |
| B. | 1.00 |
| C. | 1.67 |
| D. | 1.50 |
| Answer» D. 1.50 | |
| 2194. |
The flow of water (mass density = 1000 kg/m3 and kinematic viscosity = 10-6 m2/s) in a commercial pipe, having equivalent roughness ks as 0.12 mm, yields an average shear stress at the pipe boundary = 600 N/m2. The value of ks/ ' ( ' being the thickness of laminar sub-layer) for this pipe is |
| A. | 0.25 |
| B. | 0.50 |
| C. | 6.0 |
| D. | 8.0 |
| Answer» E. | |
| 2195. |
Water table drops by 3 m in an irrigable land of 50 hectare. If porosity and specific retention are 0.30 and 0.10 respectively, the change in storage in hectare-meter is : |
| A. | 15 |
| B. | 30 |
| C. | 45 |
| D. | 60 |
| Answer» C. 45 | |
| 2196. |
Mechanical stabilization requires : |
| A. | mixing of two or more types of natural soils |
| B. | addition of chemicals to soils |
| C. | addition of lime to soils |
| D. | addition of cementing material to soils |
| Answer» B. addition of chemicals to soils | |
| 2197. |
The most important constituent of an oil paint, is |
| A. | thinner |
| B. | vehicle |
| C. | pigment |
| D. | base |
| E. | all the above. |
| Answer» F. | |
| 2198. |
Granite mainly composed of quartz and felsper particles, is obtained from |
| A. | sedimentary rocks |
| B. | metamorphic rocks |
| C. | igneous rocks |
| D. | all the above. |
| Answer» D. all the above. | |
| 2199. |
Bullet proof glass is made of thick glass sheet sandwiched by a layer of |
| A. | steel |
| B. | stainless steel |
| C. | high test plastic |
| D. | chromium plate. |
| Answer» D. chromium plate. | |
| 2200. |
Pig iron obtained from the furnance which is properly provided with fuel at a very high temperature, is called |
| A. | Bessemer pig |
| B. | Grey or foundry pig |
| C. | White or forge pig |
| D. | Mottled pig |
| E. | None of the above. |
| Answer» C. White or forge pig | |