# Home / Civil Engineering / Soil Mechanics and Foundation Engineering :: Section 1

### Civil Engineering :: Soil Mechanics and Foundation Engineering

1. In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The liquid limit of the soil, is

2. A.

35%

B.

50%

C.
 65%
D.

none of these.   3. The active earth pressure of a soil is proportional to (where Ï† is the angle of friction of the soil)

4. A.

tan (45° - φ)

B.
 tan2 (45° + φ/2)
C.

tan2 (45° - φ/2)

D.
 tan (45° + φ)   5. The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter, is known

6.  A. liquid limit B. plastic limit C. shrinkage limit D. permeability limit.   7.  Pick up the correct statement from the following:
8. A.

The rise of the ground surface due to frost action is called frost heave.

B.

The freezing of water is accompained by a volume increase of 9%.

C.

Below freezing point, higher soil suction develops.

D.

The magnitude of frost heave decreases as the degree of saturation of soil decreases

E.
 All the above.   9. Which one of the following statements is true ?

10. A.

Clays are more porous than sands

B.
 Pressure of organic matter in a soil decreases the bearing capacity of the soil
C.

Aluminous cement is used for foundations in soils with chemical deposits

D.

All the above.   11. The lateral earth pressure on a retaining wall

12. A.

is equal to mass of the soil retained

B.

proportional to the depth of the soil

C.

proportional to the square of the depth of the soil

D.

proportional to the internal friction of the soil

E.
 none of these.   13. The internal molecular attraction of a soil, the cohesion

14. A.

decreases as the moisture content increases

B.
 increases as the moisture content decreases
C.
 is more in well compacted clays
D.
 depends upon the external applied load.   15. The quantity of seepage of water through soils is proportional to

16.  A. coefficient of permeability of soil B. total head loss through the soil C. neither (a) nor (b) D. both (a) and (b).   17. When drainage is permitted under initially applied normal stress only and full primarily consolidation is allowed to take place, the test is known as

18.  A. quick test B. drained test C. consolidated undrained test D. none of these.   19. The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known

20. A.

liquid limit

B.
 plastic limit
C.

shrinkage limit

D.

permeability limit.   