MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 169 Mcqs, each offering curated multiple-choice questions to sharpen your Hazardous Waste Management knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The lateral leachate collection pipes shall slope towards ________ pipe. |
| A. | Sump |
| B. | Drain |
| C. | Main |
| D. | Longitude |
| Answer» D. Longitude | |
| 2. |
What is the formula for quantification of leachate generation from landfill? |
| A. | I = P – P (CR/O) – AET +/- S |
| B. | P = I – P (CR/O) – AET +/- S |
| C. | I = S – P (CR/O) – AET +/- P |
| D. | I = P – S (CR/O) – AET +/- Y |
| Answer» B. P = I – P (CR/O) – AET +/- S | |
| 3. |
Drainage pipes of leachate collection system is filled with ________ |
| A. | Gravel |
| B. | Dust |
| C. | Clay |
| D. | Grass |
| Answer» B. Dust | |
| 4. |
PVC liners are suitable for landfills. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Bentonite is mixed when there is not enough clay available at a site to construct a soil liner. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Excavation of soil in a location for liner is known as ________ pit. |
| A. | Dig |
| B. | Borrow |
| C. | Barrow |
| D. | Excavated |
| Answer» C. Barrow | |
| 7. |
The horizontal joints that extends through the entire width of the dam section and are developed at each lift height is called as ___________________ |
| A. | transverse joints |
| B. | longitudinal joints |
| C. | construction joints |
| D. | contraction joints |
| Answer» C. construction joints | |
| 8. |
Which of the following line acts as a dividing line between dry (or moist) and submerged line? |
| A. | Equipotential line |
| B. | Path line |
| C. | Seepage line |
| D. | Streak line |
| Answer» D. Streak line | |
| 9. |
An arch dam looks like a single arch in _________________ |
| A. | plan |
| B. | front elevation |
| C. | side elevation |
| D. | both plan and front elevation |
| Answer» B. front elevation | |
| 10. |
When the height of the dam is in between 7.5 to 15, the Strange’s recommended value for maximum freeboard of low earth dams is ______________ |
| A. | 1.2 to 1.5 |
| B. | 1.5 to 1.8 |
| C. | 1.85 |
| D. | 2.1 |
| Answer» D. 2.1 | |
| 11. |
What is the recommended value of shear friction factor against sliding? |
| A. | More than unity |
| B. | Less than unity |
| C. | More than 3 to 5 |
| D. | Less than 3 |
| Answer» D. Less than 3 | |
| 12. |
The stresses due to rib-shortening become quite important in the case of _____________ |
| A. | long thin arch dams |
| B. | thick arch dams of small angle |
| C. | both thin and thick arch dams |
| D. | all types of arch dams |
| Answer» C. both thin and thick arch dams | |
| 13. |
The temperature stresses producing worst effects in the design of arch dams are caused by ______________ |
| A. | rise in temperature |
| B. | fall in temperature |
| C. | both rise and fall |
| D. | no effect in the design |
| Answer» C. both rise and fall | |
| 14. |
The vertical stress at the toe was found to be 3.44 MPa at the base of the gravity dam section. If the downstream face of the dam has a slope of 0.617 horizontal: 1 vertical, the maximum principal stress at the toe of the dam when there is no tailwater is _______________ |
| A. | 1.7 MPa |
| B. | 2.4 MPa |
| C. | 3.6 MPa |
| D. | 4.8 MPa |
| Answer» E. | |
| 15. |
The load from the deck of a buttress dam is transmitted to the foundations through the ______ |
| A. | corbels |
| B. | buttresses |
| C. | lateral braces |
| D. | sloping deck |
| Answer» C. lateral braces | |
| 16. |
What is the recommended formula for top width of a very low dam? |
| A. | H + 3 |
| B. | 0.2H + 3 |
| C. | 0.2 H |
| D. | H + 5 |
| Answer» C. 0.2 H | |
| 17. |
Sloughing is the process of _________________ |
| A. | progressive erosion |
| B. | subsequent removal of soil grains from within the dam |
| C. | uncontrolled seepage through the dam body |
| D. | progressive removal of soil from the D/s face |
| Answer» E. | |
| 18. |
The provision of drainage gallery in a gravity dam helps in reducing ____________________ |
| A. | hydrostatic pressure |
| B. | seepage pressure |
| C. | silt pressure |
| D. | both hydrostatic pressure and seepage pressure |
| Answer» C. silt pressure | |
| 19. |
In high dams, the safety against sliding should be checked only for friction. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 20. |
At a given elevation, the thickness of the arch ring is proportional to the radius of the arch. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 21. |
Which of the following joints justifies the two-dimensional analysis of gravity dams? |
| A. | Longitudinal joints |
| B. | Transverse joints |
| C. | Construction joints |
| D. | Contraction joints |
| Answer» C. Construction joints | |
| 22. |
Which of the following earth dam is suitable only on impervious foundation? |
| A. | Zoned embankment type |
| B. | Homogenous embankment type |
| C. | Non-homogenous type |
| D. | Diaphragm type |
| Answer» C. Non-homogenous type | |
| 23. |
Calculate the factor of safety at the point of maximum shear if unit shearing resistance is 97.9 kN/m² and the maximum shear-stress induced is 55.72 kN/m². Check whether the dam is safe or unsafe. |
| A. | F.O.S = 1.93 and safe |
| B. | F.O.S = 1.75 and unsafe |
| C. | F.O.S = 0.569 and safe |
| D. | F.O.S = 1.75 and safe |
| Answer» E. | |
| 24. |
Which of the following is the most economical type of arch dam? |
| A. | Constant radius type |
| B. | Variable radius type |
| C. | Constant angle type |
| D. | Variable angle type |
| Answer» D. Variable angle type | |
| 25. |
What is the Terzaghi’s recommended value of U/s side slope for earth dam of height less than 15m of homogenous silty clay? |
| A. | 2: 1 |
| B. | 2.5: 1 |
| C. | 3: 1 |
| D. | 3.5: 1 |
| Answer» C. 3: 1 | |
| 26. |
The blanket in earth dam is provided ___________________ |
| A. | at the ground level on u/s side |
| B. | at the ground level on the d/s side |
| C. | at the ground level of the D/s side of the dam |
| D. | on the D/s slope |
| Answer» B. at the ground level on the d/s side | |
| 27. |
Which of the following is the earliest recorded multiple arch buttress dam? |
| A. | Meer Alam dam in India |
| B. | The Coolidge dam in Arizona |
| C. | Rodriguez dam in Mexico |
| D. | Idduki dam in Kerela, India |
| Answer» B. The Coolidge dam in Arizona | |
| 28. |
If the height of the dam is 10 m, then the value of top width (A) according to Strange’s recommendations is _________________ |
| A. | 1.85 m |
| B. | 2.5 m |
| C. | 3.0 m |
| D. | 4.0 m |
| Answer» C. 3.0 m | |
| 29. |
Which of the following statement is correct with reference to earthen dams? |
| A. | These dams are very costly as compared to other types |
| B. | Gravity dams are less susceptible to failure as compared to rigid dams |
| C. | These dams are suitable for construction on almost every type of foundation |
| D. | Highly skilled labor is generally not required |
| Answer» D. Highly skilled labor is generally not required | |
| 30. |
A low gravity dam of elementary profile made up of concrete of relative density 2.57 and safe allowable stress of foundation material 4.2 MPa. What is the maximum height of the dam without considering the uplift force? |
| A. | 120 m |
| B. | 217 m |
| C. | 279 m |
| D. | 325 m |
| Answer» B. 217 m | |
| 31. |
Calculate the top width of the dam if the height of water stored is 84m. |
| A. | 5 m |
| B. | 2.5 m |
| C. | 5.55 m |
| D. | 7.75 m |
| Answer» B. 2.5 m | |
| 32. |
The most economical central angle of the arch rings of an arch dam can be adopted only at one place preferably at mid-height in an arch dam is of the type __________________ |
| A. | constant angle arch dam |
| B. | constant radius arch dam |
| C. | both constant angle and constant radius arch dam |
| D. | variable radius arch dam |
| Answer» C. both constant angle and constant radius arch dam | |
| 33. |
The foundation pressure used in the pressure grouting is equal to _________________ |
| A. | 2.0 D N/cm² |
| B. | 2.5 D N/cm² |
| C. | 5.0 D N/cm² |
| D. | 3.0 D N/cm² |
| Answer» C. 5.0 D N/cm² | |
| 34. |
The only provision among the following which can help control the seepage through the body of an earthen dam and thus to keep the phreatic line well within the dam width is _________________ |
| A. | upstream impervious cut-off |
| B. | drain trench along the downstream toe |
| C. | relief wells |
| D. | chimney drain |
| Answer» E. | |
| 35. |
The type of arch dam which generally requires overhangs at abutments is of ________________________ |
| A. | constant radius type |
| B. | variable radius type |
| C. | constant angle type |
| D. | variable angle type |
| Answer» D. variable angle type | |
| 36. |
The base width of a solid gravity dam is 35 m and the specific gravity of dam material is 2.45. What is the approximate allowable height of the dam having an elementary profile without considering the uplift? |
| A. | 64.68 m |
| B. | 54.80 m |
| C. | 164 m |
| D. | 80 m |
| Answer» C. 164 m | |
| 37. |
A non-vertical arch dam is known as a _______________ |
| A. | buttress dam |
| B. | double curvature arch dam |
| C. | shell arch dam |
| D. | both double curvature and shell arch dams |
| Answer» E. | |
| 38. |
Which of the following is not provided in order to control the possibility of sand boiling? |
| A. | Relief wells |
| B. | Drain trenches |
| C. | Vertical cut-offs |
| D. | Berms |
| Answer» D. Berms | |
| 39. |
The collection and removal of water before it acquires high downward velocities is ensured by provision of ____________________ |
| A. | berms |
| B. | freeboard |
| C. | burrow pits |
| D. | spoil banks |
| Answer» B. freeboard | |
| 40. |
Which of the following is not the basis for the design of an arch dam? |
| A. | Thin cylinder theory |
| B. | Trial load theory |
| C. | Unit column theory |
| D. | Elastic theory |
| Answer» D. Elastic theory | |
| 41. |
What is provided in the form of a transition zone between the homogenous embankments-fill and rock toe? |
| A. | Toe filter |
| B. | Horizontal blanket |
| C. | Chimney drain |
| D. | Trenches |
| Answer» B. Horizontal blanket | |
| 42. |
In order to reduce uplift on a gravity dam, the type of grouting done is ____________________ |
| A. | curtain grouting near the heel |
| B. | consolidation grouting near the heel |
| C. | curtain grouting near the toe |
| D. | consolidation grouting near the toe |
| Answer» B. consolidation grouting near the heel | |
| 43. |
Which of the following forces is the least important in the design of arch dams? |
| A. | Reservoir water force |
| B. | Uplift pressure |
| C. | Temperature stresses |
| D. | Ice load |
| Answer» C. Temperature stresses | |
| 44. |
Provision of horizontal berms at suitable vertical intervals may be provided in the downstream face of an earthen dam in order to _________________ |
| A. | allow the movement of cattle |
| B. | allow the inspection of vehicles to move |
| C. | reduce the erosion caused by the flowing rainwater |
| D. | increase the erosion |
| Answer» D. increase the erosion | |
| 45. |
What is the correct expression of equivalent liquid unit weight? |
| A. | ϒeq.tan² [45 – Φ/2] |
| B. | ϒeq.tan² [45 + Φ/2] |
| C. | ϒeq.tan [45 – Φ/2] |
| D. | ϒeq.tan [45 + Φ/2] |
| Answer» B. ϒeq.tan² [45 + Φ/2] | |
| 46. |
A constant angle arch dam when compared to constant radius arch dam utilizes concrete quality of about ______________ |
| A. | 43% |
| B. | 130% |
| C. | 230% |
| D. | 113% |
| Answer» B. 130% | |
| 47. |
Calculate the maximum shear-stress induced if the horizontal average shear stress induced in u/s portion of the dam at the base is 36.45 kN/m². |
| A. | 43.74 kN/m² |
| B. | 47.38 kN/m² |
| C. | 51.03 kN/m² |
| D. | 54.67 kN/m² |
| Answer» D. 54.67 kN/m² | |
| 48. |
According to thin cylinder theory, the volume of concrete required for an arch dam would be minimum if the central angle is ____________ |
| A. | 130° 34’ |
| B. | 133° 34’ |
| C. | 143° 34’ |
| D. | 153° 34’ |
| Answer» C. 143° 34’ | |
| 49. |
The best design of an arch dam is when __________________ |
| A. | all horizontal water loads are transferred horizontally to the abutments |
| B. | the dam is safe against sliding at various levels |
| C. | the load is divided between the arches and cantilevers and the deflections at the conjugal points being equal |
| D. | the deflections of the cantilevers are equal at different points |
| Answer» D. the deflections of the cantilevers are equal at different points | |
| 50. |
A phreatic line in seepage analysis is defined as the line on which pressure is _______________ |
| A. | equal to the atmosphere |
| B. | greater than atmosphere |
| C. | lower than atmosphere |
| D. | varying |
| Answer» B. greater than atmosphere | |