Soil Mechanics and Foundation Engineering

311. The water content of soil is defined as the ratio of

  1. Volume of water to volume of given soil
  2. Volume of water to volume of voids in soil
  3. Weight of water to weight of air in voids
  4. Weight of water to weight of solids of given mass of soil

Correct answer: (D)
Weight of water to weight of solids of given mass of soil

312. The water content of soil, which represents the boundary between plastic state and liquid state, is known as

  1. Liquid limit
  2. Plastic limit
  3. Shrinkage limit
  4. Plasticity index

Correct answer: (A)
Liquid limit

313. The weight of a container 'W1' is and that of container with soil simple, is 'W2'. If the weight of the container and oven dried soil sample is 'W3', the moisture content of the soil, is

  1. [(W2 - W3)/(W3 - W1)] × 100
  2. [(W3 - W2)/(W1 - W2)] × 100
  3. [(W1 - W2)/(W2 - W3)] × 100
  4. [(W2 - W1)/(W1 - W3)] × 100

Correct answer: (A)
[(W2 - W3)/(W3 - W1)] × 100

314. 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

  1. 5 %
  2. 10 %
  3. 15 %
  4. 20 %

Correct answer: (D)
20 %

315. The Westergaard analysis is used for

  1. Sandy soils
  2. Cohesive soils
  3. Stratified soils
  4. Clayey soils

Correct answer: (C)
Stratified soils

316. The zero atmospheric pressure is at

  1. Sea level
  2. Water table
  3. Phreatic surface
  4. Both (B) and (C) of the above

Correct answer: (D)
Both (B) and (C) of the above

317. Through a point in a loaded soil mass, there exists 'n' typical planes mutually orthogonal on which the stress is wholly normal and no shear stress acts, if 'n' is

  1. 1
  2. 2
  3. 3
  4. 4

Correct answer: (C)
3

318. Through a point in a loaded soil, the principal stress is maximum on

  1. Minor principal plane
  2. Intermediate principal plane
  3. Major principal plane
  4. None of these

Correct answer: (C)
Major principal plane

319. Time factor for a clay layer is

  1. A dimensional parameter
  2. Directly proportional to permeability of soil
  3. Inversely proportional to drainage path
  4. Independent of thickness of clay layer

Correct answer: (B)
Directly proportional to permeability of soil

320. Total number of stress components at a point within a soil mass loaded at its boundary is

  1. 3
  2. 6
  3. 9
  4. 16

Correct answer: (C)
9

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