Geotechnical Engineering

Soils

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Based on HRB classification system, the soil are divided in to ___________
2 primary groups
6 primary groups
7 primary groups
6 primary groups
Explanation:
Based on HRB system, the soil is divided into 7 primary groups, designated as A-1, A-2…A-7.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
The purpose of soil classification is to ___________
To arrange various soils types in to groups
To use it for various purpose
For finding its properties
For investigating the soil
Explanation:
The purpose of soil classification is to arrange various types of soils in to groups according to their engineering or agricultural properties.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Which of the following terms are used to indicate grain sizes?
Gravel
Sand
Silt
All of the mentioned
Explanation:
Terms such as gravel, sand, silt, and clay are used to indicate grain sizes. These terms are used only as a designation of particle size.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Indian standard classification of soil is based on _________
PRA system
International soil classification
M.I.T system
Indian system
Explanation:
Indian standard classification (IS: 1948-1970) is based on the M.I.T. system.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Particle size classification is best suited for _________
Coarse grained soil
Clay soil
Dry soil
All of the mentioned
Explanation:
Since properties of clay soils is less dependent on particle size distrubution(textural classification) and more dependent on size it is best suited for clay soil.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Highway research board (HRB) classification system is also known as__________
Indian classification system
Public road administration (PRA) system
International classification system
M.I.T. classification system
Explanation:
Highway research board classification system is also known as public road administration (PRA) system.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
The type of triangle, used in textural classification of soil is _____________
Right angled triangle
Equilateral triangle
Perpendicular triangle
None of the mentioned
Explanation:
A triangle, having equal length of sides (i.e. Equilateral triangle) is used in textural classification chart.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
The term ‘silt’ in particle size classification system, can be replaced by ___________
Silt size
Clay size
Silt type
None of the mentioned
Explanation:
As the system is classified based on size, it is preferable to use the word ‘silt size’ and ‘clay size’ in place of simply ‘silt’ or ‘clay’.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
The performance of the soil, when used for pavement construction is found out by using _____________
Quality test
Group index
Material test
None of the mentioned
Explanation:
As group index is a mean of rating the value of soil as a sub-grade material. It can be used for finding the performance and quality of the soil.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
The group index of a soil depends on ____________
Liquid limit
Plastic limit
All of the mentioned
None of the mentioned
Explanation:
Group index of soil usually varies by