Geotechnical Engineering

Soils

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Soil classification based on the particle size distribution is _____________
Unified soil classification
IS classification
Particle size classification
Textural classification
Explanation:
Soil classification of composite soils exclusively based on the particle size distribution is known as textural classification.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
To use textural classification chart ___________ lines must be drawn.
Parallel to the three sides of the triangle
Parallel to the only one side of the triangle
Adjacent to the three sides of the triangle
Adjacent to the one sides of the triangle
Explanation:
To use the textural classification chart, for a given percentage of three constituents forming a soil, lines are drawn parallel to three sides of the equilateral triangle.
Question 3
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 4
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 5
Marks : +2 | -2
Pass Ratio : 100%
Soil occurring in nature, is composed of __________
Sand
Decomposed substance
All of the mentioned
None of the mentioned
Explanation:
Soil occurring in nature is composed of a different percentage of sand, silt, and clay size particles.
Question 6
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 7
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 8
Marks : +2 | -2
Pass Ratio : 100%
The best known classification system in textural classification is __________
M.I.T. classification system
Triangular classification of U.S. public road administration
Indian classification system
International classification
Explanation:
Triangular classification of U.S. public road administration is a commonly used system for textural classification.
Question 9
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 10
Marks : +2 | -2
Pass Ratio : 100%
For engineering purpose, soil can be classified in terms of ___________
Particle size
Textural
Unified soil
All of the mentioned
Explanation:
For general engineering purposes, soil can be classified in terms of particle size, textural and unified soil.