McqMate
| 301. |
The weight of a pycnometer containing 400 g sand and water full to the top is 2150 g. The weight of pycnometer full of clean water is 1950 g. If specific gravity of the soil is 2.5, the water content is |
| A. | 5 % |
| B. | 10 % |
| C. | 15 % |
| D. | 20 % |
| Answer» D. 20 % | |
| 302. |
A phreatic line is defined as the line within a dam section below which there are |
| A. | Positive equipotential lines |
| B. | Positive hydrostatic pressure |
| C. | Negative hydrostatic pressure |
| D. | Negative equipotential lines |
| Answer» B. Positive hydrostatic pressure | |
| 303. |
The coefficient of curvature is defined |
| A. | D60/D10 |
| B. | D10/D60 |
| C. | D30²/D60 D10 |
| D. | D10²/ D30 D60 |
| Answer» C. D30²/D60 D10 | |
| 304. |
Accurate determination of water content, is made by |
| A. | Calcium carbide method |
| B. | Sand bath method |
| C. | Alcohol method |
| D. | Oven-drying method |
| Answer» D. Oven-drying method | |
| 305. |
The clay soil mainly consists of |
| A. | Kaolinite |
| B. | Montmorillonite |
| C. | Vermiculite |
| D. | All the above |
| Answer» D. All the above | |
| 306. |
The maximum shear stress occurs on the filament which makes an angle with the horizontal plane equal to |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 90° |
| Answer» B. 45° | |
| 307. |
Water content of a soil sample is the difference of the weight of the given sample at the given temperature and the weight determined after drying it for 24 hours at temperature ranging from |
| A. | 80° to 90°C |
| B. | 90° to 95°C |
| C. | 103° to 105°C |
| D. | 105° to 110°C |
| Answer» D. 105° to 110°C | |
| 308. |
The equation = C + is given by |
| A. | Rankine |
| B. | Coulomb |
| C. | all |
| D. | Mohr |
| Answer» B. Coulomb | |
| 309. |
Determination of water content of a soil sample suspected to contain gypsum is made by drying the sample for longer period at a temperature not more than |
| A. | 60°C |
| B. | 80°C |
| C. | 100°C |
| D. | 110°C |
| Answer» B. 80°C | |
| 310. |
Pick up the correct statement from the following: |
| A. | The phenomenon of quicksand generally occurs in the cohesionless soil |
| B. | At critical hydraulic gradient, the saturated sand becomes quick |
| C. | The critical gradient depends on the void ratio and the specific gravity |
| D. | All the above |
| Answer» D. All the above | |
| 311. |
A soil sample has passing 0.075 mm sieve = 60% liquid limit = 65% and plastic limit = 40%. The group index of the soil, is |
| A. | 5 |
| B. | 20 |
| C. | 40 |
| D. | None of these |
| Answer» D. None of these | |
| 312. |
The plasticity index is the numerical difference between |
| A. | Liquid limit and plastic limit |
| B. | Plastic limit and shrinkage limit |
| C. | Liquid limit and shrinkage limit |
| D. | None of these |
| Answer» A. Liquid limit and plastic limit | |
| 313. |
The specific gravity of sands, is approximately |
| A. | 1.6 |
| B. | 2.0 |
| C. | 2.2 |
| D. | 2.6 |
| Answer» D. 2.6 | |
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