Soil Mechanics and Foundation Engineering (Part-2) (General Engineering) (SSC JE)

Total Questions: 50

41. Shear failure of soils takes place when [RRB S.S.E (Bilaspur/Secunderabad) 21.12.2014 ]

Correct Answer: (a) the angle of obliquity is maximum
Solution:

The shear failure of soil takes place, is the failure has maximum obliquity and becomes tangent to the Mohr's circle.

42. If the plasticity index of a soil mass is zero, the soil is– [RRB JE 26.08.2015 (Shift-I) / RRB S.S.E (Bhopal) 21.12.2014 ]

Correct Answer: (d) Sand
Solution:


In the case of sandy soils, plastic limit should be determined first. When plastic limit cannot be determined, the plasticity index is reported as NP(non-plastic). When the plastic limit is equal to or greater than the liquid limit, the plasticity index is reported as zero.

43. A pycnometer is used to determine : [RRB JE 27.08.2015 (Shift-II) ]

Correct Answer: (c) Water content and specific gravity
Solution:

A pycnometer is used to determine water content and specific gravity.

44. The relationship between void ratio 'e' and porosity ratio 'n' for a given soil mass is: [RRB S.S.E (Bilaspur/Secunderabad) 21.12.2014 ]

Correct Answer: (c)
Solution:

45. The property of a soil, which permits water to percolate through it, is called: [RRB S.S.E (Bilaspur/Secunderabad) 21.12.2014 ]

Correct Answer: (c) Permeability
Solution:

Permeability– It is the property of the soil by virtu of which it allows the flow of fluid through it.
• It is also termed as hydraulic conductivity.
• Permeability of coarse grain soil is more than that of fine grain soil.

46. Dry density of soil is equal to the: [RRB JE (Chennai) 14.12.2014 ]

Correct Answer: (b) Mass of solids to the total volume of soil
Solution:

47. The maximum settlement for the isolated foundation on clayey soils should be limited to [MPSC AE PRE.-08.07.2018 ]

Correct Answer: (a) 65 mm
Solution:

48. The coefficient of volume compressibility is– [RRB JE 29.08.2015 (Shift-III) ]

Correct Answer: (c) directly proportional to the coefficient of compressibility
Solution:

Coefficient of volume compressibility–

49. Which of the following is the type of soil that has been deposited from suspension in running water? [NHPC JE (EE) 05.04.2022 (Shift-II) ]

Correct Answer: (a) Alluvial soil
Solution:

Alluvial soil–All type of soil carried & deposit by water are known as alluvial soil.
Lacustrine soil–Soil deposits in lake called lacustrine soil.
Collovial soil–Gravity deposit soil.
Type of soil–
Soil                Deposited by
Marine soil       -         Sea water
Aeolian soil       -         Wind
Glacial soil (Till/drift)   -  Ice

50. Soil erosion can be prevented by: [RRB JE (Chennai) 14.12.2014 ]

Correct Answer: (c) Planting trees
Solution:

Method of preventing soil erosion–
1. Planting tree
2. Matting of soil
3. Application of mulches
4. Constructing wind breakers