Geotechnical Engineering Set 13 MCQs

This set of Geotechnical Engineering Multiple Choice Questions & Answers (MCQs) focuses on Geotechnical Engineering Set 13

Q1 | 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

10%

15%

20%

Q2 | A phreatic line is defined as the line within a dam section below which there are

Positive equipotential lines

Positive hydrostatic pressure

Negative hydrostatic pressure

Negative equipotential lines

Q3 | The coefficient of curvature is defined

D60/D10

D10/D60

D30²/D60 D10

D10²/ D30 D60

Q4 | Accurate determination of water content, is made by

Calcium carbide method

Sand bath method

Alcohol method

Oven-drying method

Q5 | The clay soil mainly consists of

Kaolinite

Montmorillonite

Vermiculite

All the above

Q6 | The maximum shear stress occurs on the filament which makes an angle with the horizontal planeequal to

30°

45°

60°

90°

Q7 | 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

80° to 90°C

90° to 95°C

103° to 105°C

105° to 110°C

Q8 | The equation = C + is given by

Rankine

Coulomb

all

Mohr

Q9 | 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

60°C

80°C

100°C

110°C

Q10 | Pick up the correct statement from the following:

The phenomenon of quicksand generally occurs in the cohesionless soil

At critical hydraulic gradient, the saturated sand becomes quick

The critical gradient depends on the void ratio and the specific gravity

All the above

Q11 | A soil sample has passing 0.075 mm sieve = 60% liquid limit = 65% and plastic limit = 40%. The group index of the soil, is

None of these

Q12 | The plasticity index is the numerical difference between

Liquid limit and plastic limit

Plastic limit and shrinkage limit

Liquid limit and shrinkage limit

None of these

Q13 | The specific gravity of sands, is approximately

1.6

2.2

2.6