Soil Mechanics and Foundation Engineering - Civil Engineering Questions and Answers pdf download free

1. Residual soils are formed by
a)    glaciers
b)    wind
c)    water
d)    none of the above

Ans:d

2. Water content of soil can
a)    never be greater than 100 %
b)    take values only from 0 % to 100 %
c)    be less than 0 %
d)    be greater than 100 %

Ans:d

3. Which of the following types of soil is transported by gravitational forces ?
a)    loess
b)    talus
c)    drift
d)    dune sand
Ans:b

4. A fully saturated soil is said to be
a)    one phase system
b)    two phase system with soil and air
c)    two phase system with soil and water
d)    three phase system
Ans:c

5. Valid range for S, the degree of saturation of soil in percentage is
a)    S>0
b)    S<0
c)    0<S<100
d)    0 < S < 100
Ans:d

6. A soil has a bulk density of 22 kN/m3 and water content 10 %. The dry density of soil is
a) 18.6 kN/m3
b) 20.0 kN/m3
c) 22.0 kN/m3
d) 23.2 kN/m3
Ans:b

7.    If the voids of a soil mass are full of air only, the soil is termed as
a)    air entrained soil
b)    partially saturated soil
c)    dry soil
d)    dehydrated soil
Ans:c

8.    Valid range for n, the percentage voids, is
a)    0<n<100
b)    0<n<100
c)    n>0
d)    n<0
Ans:a

9.    Select the correct statement.
a)    Unit weight of dry soil is greater than unit weight of wet soil.
b)    For dry soils, dry unit weight is less than total unit weight.
c)    Unit weight of soil increases due to submergence in water.
d)    Unit weight of soil decreases due to submergence in water.
Ans:d

10.    Voids ratio of a soil mass can
a)    never be greater than unity
b)    be zero
c)    take any value greater than zero
d)    take values between 0 and 1 only
Ans:c

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