121.The unit weight of soil mass is expressed in ?
- kg/m²
- kg/m³
- N/m²
- N/m³
122.When the plastic limit is equal to or greater than the liquid limit, then the plasticity index is ?
- negative
- zero
- one
- more than one
123.A line showing the dry density as a function of water content for soil containing no air voids, is called ?
- saturation line
- zero air void line
- liquid limit line
- none of these
124.The unconfined compressive strength of a hard ?
- 10 to 25 kN/m²
- 25 to 150 kN/m²
- 150 to 400 kN/m²
- above 400 kN/m²
125.Sieving is not practicable for grain sizes smaller than about ?
- 0.075 mm
- 0.095 mm
- 0.15 mm
- 0.2 mm
126.Glacial soils are those soils which are ?
- deposited in sea water
- deposited at the bottom of the lakes
- transported by running water
- none of these
127.The flow net in the seepage of water through a soil medium is a network of ?
- flow lines
- equi-potential lines
- flow lines and equi-potential lines
- water particles and their movement
128.The frictional resistance of clayey soil is ......... sandy soil ?
- less than
- more than
- same as
- None of these
129.The minimum size of grains of silts is about ?
- 0.0002 mm
- 0.002 mm
- 0.02 mm
- 0.2 mm
130.The coefficient of passive earth pressure ........ with the increase of angle of shearing resistance ?
- increases
- decreases
- does not change
- Any of the above.
131.The maximum size of grains of silts is about ?
- 0.06 mm
- 0.2 mm
- 0.5mm
- 1 mm
132.The water content in a soil at which just shear strength develops is called ?
- liquid limit
- shrinkage limit
- elastic limit
- plastic limit
133.Which of the following is practically impermeable ?
- Sand mixture
- Gravel
- Coarse sand
- Clay
134.The density of sand at which there is no change in volume under the influence of shearing strain produced due to shear stress, is called ?
- relative density
- apparent density
- critical density
- any of these
135.By an agriculturist, soil is defined as ?
- the loose mantle at the surface of the earth which favours the growth of plant
- a natural aggregate of mineral grains, loose or moderately cohesive, inorganic or organic in nature
- a disintegrated rock
- none of the above
136.The angle of internal friction of round-grained dense sand is about ?
- 5° to 25°
- 25? to 30?
- 30° to 35?
- 32? to 37?
137.Black cotton soil ?
- is inorganic in nature
- contains large percentage of clay mineral
- exhibits high compressibility
- all of these
138.A sample of soil has liquid limit 45 %, plastic limit 25 %, shrinkage limit 17 % and natural moisture content 30%. The consistency index of the soil is ?
- 15/20
- 13/20
- 8/20
- 5/20
139.The specific gravity of sandy soils is ?
- 1.2
- 1.8
- 2.2
- 2.7
140.Stoke's law is applicable to particles upto ............. effective diameter ?
- 0.0002 mm
- 0.002 mm
- 0.02 mm
- 0.2 mm
0 Comments