1.Laboratory classification of fined grained soil is done with the help of ________
a) Plasticity chart
b) Textural classification chart
c) Kozney’s graphical method
d) None of the mentioned
Explanation: Laboratory classification criteria of fine grained soil is done by plasticity chart.
2. The A-line, in unified classification system table has the equation of __________
a) IP=WL-20
b) IP=0.73(WL-20)
c) IP=0.73(20-wL)
d) IP=20-WL
Explanation: The A-line, dividing the inorganic clay from silt and organic soil has the equation: IP=0.73(WL-20).
3. According to IS classification, the symbol GC means ____________
a) Clayey gravel
b) Silt gravel
c) Sand gravel
d) Well graded gravel
Explanation: As per Indian standards of group symbols and typical names, G-refers to gravel and C-refers to clay.
4. The symbol ‘L’ represents which of the following soil types?
a) Silt and Clay
b) Gravel
c) All of the mentioned
d) None of the mentioned
Explanation: By IS classification, silts and clays of low compressibility having a liquid less than 35, are represented by the ‘L’.
5. What are the features required, for classifying a soil component as boulder?
a) Bulky hard
b) Diameter more than 30cm
c) Round to angular shape
d) All of the mentioned
Explanation: For a soil component to be a boulder, size range must be of average diameter more than 30cm and shape of round to angular and bulky hard.
6. What are the Soil properties, which are influenced by soil structure?
a) Permeability
b) Compressibility
c) Shear strength
d) All of the mentioned
Explanation: Soil structure is an important factor which influences many soil properties such as permeability, compressibility, and shear strength.
7. The single grained structure is a characteristic of __________
a) Coarse-grained soil
b) Fine-grained soil
c) None of the mentioned
d) All of the mentioned
Explanation: Single grained structure is usually found in coarse-grained soil.
8. Soil structure usually defines __________
a) Arrangement of soil particles and Stage of aggregation of soil particle in soil
b) Composition of the soil mass
c) None of the mentioned
d) All of the mentioned
Explanation: Soil structure is defined as the arrangement and state of aggregation of soil particle in a soil mass.
9. An arrangement composed of ‘flocs’ of soil particle is known as __________
a) Dispersed structure
b) Cohesive matrix structure
c) Honey comb structure
d) Flocculent structure
Explanation: An arrangement composed of ‘flocs’ of soil particle is known as flocculent structure. As the particles are oriented ‘edge-to-edge’ (or) ‘edge-to-face’ with respect to one another.
10. An arrangement composed of soil particle having a parallel orientation is ___________
a) Dispersed
b) Coarse grained skeleton
c) Honey comb
d) Single grained
Explanation: In dispersed structure of particle are oriented face to face with one another in a dispersed state.