Q.1
Stoke's law sates that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon
  • shape of grain
  • weight of grain
  • size of grain
  • shape and size of grain
  • E. shape, size and weight of grain.
Q.2
Accurate determination of water content, is made by
  • calcium carbide method
  • sand bath method
  • alcohol method
  • oven-drying method.
Q.3
The water content of soil is defined as the ratio of
  • volume of water to volume of given soil
  • volume of water to volume of voids in soil
  • weight of water to weight of air in voids
  • weight of water to weight of solids of given mass of soil.
Q.4
Rankine's theory of active earth pressure assumes
  • soil mass is homogeneous, dry and cohesionless
  • ground surface is a plane which may be horizontal or inclined
  • back of the wall is vertical and smooth
  • wall yields about the base
  • E. all the above.
Q.5
Degree of saturation of a natural soil deposit having water content 15%, specific gravity 2.and void ratio 0.is
  • 50%
  • 60%
  • 75%
  • 80%
Q.6
The effective size of particles of soil is denoted by
  • D10
  • D20
  • D30
  • D60
Q.7
The coefficient of curvature is defined
  • D30² D60D10
  • D60 D10
  • N 2 D10² D30D60
  • D10 D60
Q.8
According to Coulomb's wedge theory, the active earth pressure slides the wedge
  • down and outwards on a slip surface
  • up and inwards on a slip surface
  • horizontal upward and parallel to base
  • horizontal inward and parallel to base.
Q.9
Minimum depth of a footing carrying a heavy load, is calculated by the formula
  • d 3W 4fL (L + 1)
  • d= 3W 4fL (L-1)
  • d = (L-1) 4fL 3W
  • d= (L-1) 2W 3fL
Q.10
A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.If the moisture content in the soil is 20%, the degree of saturation is
  • 20%
  • 77%
  • 92%
  • none of these.
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