MCQOPTIONS
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MCQOPTIONS
This section includes 365 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be |
| A. | 500 kg |
| B. | 1000 kg |
| C. | 1500 kg |
| D. | 2000 kg |
| Answer» E. | |
| 302. |
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as |
| A. | meta center |
| B. | center of pressure |
| C. | center of buoyancy |
| D. | center of gravity |
| Answer» C. center of buoyancy | |
| 303. |
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be |
| A. | higher than the surface of liquid |
| B. | the same as the surface of liquid |
| C. | lower than the surface of liquid |
| D. | unpredictable |
| Answer» D. unpredictable | |
| 304. |
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are |
| A. | less |
| B. | more |
| C. | equal |
| D. | less at low temperature and more at high temperature |
| Answer» C. equal | |
| 305. |
Falling drops of water become spheres due to the property of |
| A. | adhesion |
| B. | cohesion |
| C. | surface tension |
| D. | viscosity |
| Answer» D. viscosity | |
| 306. |
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will |
| A. | increase |
| B. | decrease |
| C. | remain same |
| D. | unpredictable |
| Answer» D. unpredictable | |
| 307. |
Free surface of a liquid tends to contract to the smallest possible area due to force of |
| A. | surface tension |
| B. | viscosity |
| C. | friction |
| D. | cohesion |
| Answer» B. viscosity | |
| 308. |
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its |
| A. | specific weight |
| B. | specific mass |
| C. | specific gravity |
| D. | specific density |
| Answer» D. specific density | |
| 309. |
Specific weight of sea water is more that of pure water because it contains |
| A. | dissolved air |
| B. | dissolved salt |
| C. | suspended matter |
| D. | all of the above |
| Answer» E. | |
| 310. |
A pressure of 25 m of head of water is equal to |
| A. | 25 kN/m2 |
| B. | 245 kN/m2 |
| C. | 2500 kN/m2 |
| D. | 2.5kN/m2 |
| Answer» C. 2500 kN/m2 | |
| 311. |
Alcohol is used in manometers because |
| A. | it has low vapour pressure |
| B. | it is clearly visible |
| C. | it has low surface tension |
| D. | it can provide longer column due to low density |
| Answer» E. | |
| 312. |
A one dimensional flow is one which |
| A. | is uniform flow |
| B. | is steady uniform flow |
| C. | takes place in straight lines |
| D. | involves zero transverse component of flow |
| Answer» E. | |
| 313. |
Which of the following is the unit of kinematic viscosity |
| A. | pascal |
| B. | poise |
| C. | stoke |
| D. | faraday |
| Answer» D. faraday | |
| 314. |
Kinematic viscosity is equal to |
| A. | dynamic viscosity/density |
| B. | dynamicviscosity x density |
| C. | density/dynamic viscosity |
| D. | 1/dynamicviscosity x density |
| Answer» B. dynamicviscosity x density | |
| 315. |
The ratio of absolute viscosity to mass density is known as |
| A. | specific viscosity |
| B. | viscosity index |
| C. | kinematic viscosity |
| D. | coefficient of viscosity |
| Answer» D. coefficient of viscosity | |
| 316. |
The units of kinematic viscosity are |
| A. | metres2 per sec |
| B. | kg sec/meter |
| C. | newton-sec per meter |
| D. | newton-sec per meter |
| Answer» B. kg sec/meter | |
| 317. |
If w is the specific weight of liquid and k the depth of any point from the surface,then pressure intensity at that point will be |
| A. | h |
| B. | wh |
| C. | w/h |
| D. | h/w |
| Answer» C. w/h | |
| 318. |
The density of water is 1000 kg/m3 at |
| A. | 0°C |
| B. | 0°K |
| C. | 4°C |
| D. | 20°C |
| Answer» D. 20°C | |
| 319. |
Increase in pressure at the outer edge of a drum of radius R due to rotation at corad/sec, full of liquid of density p will be |
| A. | pco2/?2 |
| B. | pco2/?2/2 |
| C. | 2pa2R2 |
| D. | pa2R/2 |
| Answer» C. 2pa2R2 | |
| 320. |
Choose the wrong statement. Alcohol is used in manometer, because |
| A. | its vapour pressure is low |
| B. | it provides suitable meniscus for the inclined tube |
| C. | its density is less |
| D. | it provides longer length for a given pressure difference |
| Answer» B. it provides suitable meniscus for the inclined tube | |
| 321. |
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water |
| A. | 51 cm |
| B. | 50 cm |
| C. | 52 cm |
| D. | 52.2 cm |
| Answer» B. 50 cm | |
| 322. |
For manometer, a better liquid combination is one having |
| A. | higher surface tension |
| B. | lower surface tension |
| C. | surface tension is no criterion |
| D. | high density and viscosity |
| Answer» B. lower surface tension | |
| 323. |
Dimensions of surface tension are |
| A. | MlL°T2 |
| B. | MlL°Tx |
| C. | MlL r2 |
| D. | MlL2T2 |
| Answer» B. MlL°Tx | |
| 324. |
Choose the correct relationship |
| A. | specific gravity = gravity x density |
| B. | dynamicviscosity = kinematicviscosity x density |
| C. | gravity = specific gravity x density |
| D. | kinematicviscosity = dynamicviscosity x density |
| Answer» C. gravity = specific gravity x density | |
| 325. |
Which of the following meters is not associated with viscosity |
| A. | Red wood |
| B. | Say bolt |
| C. | Engler |
| D. | Orsat |
| Answer» E. | |
| 326. |
Units of surface tension are |
| A. | energy/unit area |
| B. | distance |
| C. | both of the above |
| D. | it has no units |
| Answer» D. it has no units | |
| 327. |
Kinematic viscosity is dependent upon |
| A. | pressure |
| B. | distance |
| C. | level |
| D. | density |
| Answer» E. | |
| 328. |
The units of viscosity are |
| A. | metres2 per sec |
| B. | kg sec/metre |
| C. | newton-sec per metre2 |
| D. | newton-sec per metre |
| Answer» C. newton-sec per metre2 | |
| 329. |
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is |
| A. | 400 kg/cm2 |
| B. | 4000 kg/cm2 |
| C. | 40 x 105 kg/cm2 |
| D. | 40 x 106 kg/cm2 |
| Answer» C. 40 x 105 kg/cm2 | |
| 330. |
The stress-strain relation of the newtoneon fluid is |
| A. | linear |
| B. | parabolic |
| C. | hyperbolic |
| D. | inverse type |
| Answer» B. parabolic | |
| 331. |
Surface tension |
| A. | acts in the plane of the interface normal to any line in the surface |
| B. | is also known as capillarity |
| C. | is a function of the curvature of the interface |
| D. | decreases with fall in temperature |
| Answer» B. is also known as capillarity | |
| 332. |
Surface tension has the units of |
| A. | newtons/m |
| B. | newtons/m |
| C. | new tons/m |
| D. | newtons |
| Answer» D. newtons | |
| 333. |
The increase of temperature results in |
| A. | increase in viscosity of gas |
| B. | increase in viscosity of liquid |
| C. | decrease in viscosity of gas |
| D. | decrease in viscosity of liquid |
| Answer» E. | |
| 334. |
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to |
| A. | 1000 |
| B. | 2100 |
| C. | 2700 |
| D. | 21,000 |
| Answer» E. | |
| 335. |
A balloon lifting in air follows the following principle |
| A. | law of gravitation |
| B. | Archimedes principle |
| C. | principle of buoyancy |
| D. | all of the above |
| Answer» E. | |
| 336. |
The bulk modulus of elasticity |
| A. | has the dimensions of 1/pressure |
| B. | increases with pressure |
| C. | is large when fluid is more compressible |
| D. | is independent of pressure and viscosity |
| Answer» C. is large when fluid is more compressible | |
| 337. |
The bulk modulus of elasticity with increase in pressure |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | increases first upto certain limit and then decreases |
| Answer» B. decreases | |
| 338. |
Viscosity of water in comparison to mercury is |
| A. | higher |
| B. | lower |
| C. | same |
| D. | higher/lower depending on temperature |
| Answer» B. lower | |
| 339. |
A fluid in equilibrium can’t sustain |
| A. | tensile stress |
| B. | compressive stress |
| C. | shear stress |
| D. | bending stress |
| Answer» D. bending stress | |
| 340. |
For very great pressures, viscosity of moss gases and liquids |
| A. | remains same |
| B. | increases |
| C. | decreases |
| D. | shows erratic behaviour |
| Answer» E. | |
| 341. |
A perfect gas |
| A. | has constant viscosity |
| B. | has zero viscosity |
| C. | is incompressible |
| D. | none of the above. |
| Answer» E. | |
| 342. |
The surface tension of mercury at normal temperature compared to that of water is |
| A. | more |
| B. | less |
| C. | same |
| D. | more or less depending on size of glass tube |
| Answer» B. less | |
| 343. |
The tendency of a liquid surface to contract is due to the following property |
| A. | cohesion |
| B. | adhesion |
| C. | viscosity |
| D. | surface tension |
| Answer» E. | |
| 344. |
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is |
| A. | 10m/sec2 |
| B. | 9.81 m/sec2 |
| C. | 10.2/m sec |
| D. | 9.75 m/sec2 |
| Answer» B. 9.81 m/sec2 | |
| 345. |
The pressure at a point in a fluid will not be same in all the directions when the fluid is |
| A. | moving |
| B. | viscous |
| C. | viscous and static |
| D. | viscous and moving |
| Answer» E. | |
| 346. |
The normal stress in a fluid will be constant in all directions at a point only if |
| A. | it is incompressible |
| B. | it has uniform viscosity |
| C. | it has zero viscosity |
| D. | it is at rest |
| Answer» E. | |
| 347. |
Which of the following is demensionless |
| A. | specific weight |
| B. | specific volume |
| C. | specific speed |
| D. | specific gravity |
| Answer» E. | |
| 348. |
When the flow parameters at any given instant remain same at every point, then flow is said to be |
| A. | quasi static |
| B. | steady state |
| C. | laminar |
| D. | uniform |
| Answer» E. | |
| 349. |
Specific weight of water in S.I. units is equal to |
| A. | 1000 N/m3 |
| B. | 10000 N/m3 |
| C. | 9.81 xlO3 N/m3 |
| D. | 9.81 xlO6N/m3 ( |
| Answer» D. 9.81 xlO6N/m3 ( | |
| 350. |
The specific weight of water is 1000 kg/m” |
| A. | at norma] pressure of 760 mm |
| B. | at 4°C temperature |
| C. | at mean sea level |
| D. | all the above |
| Answer» E. | |