Soil Mechanics MCQ - Single Grained and Honey Comb Structure

1. The cationic linkage is similar to the intersheet bonds of ____________
a) Kaolinite
b) Illite
c) Dichite
d) Montmorillonite

Answer: b
Explanation: The cationic linkage is similar to the intersheet bonds of illite since particle can be linked together through water-cation-water mechanism.

2. Between the soil particles, the cation charge may be entirely balanced by ____________
a) Particle repulsion
b) Negative charge
c) Cationic charge
d) Particle charge

Answer: d
Explanation: The cation may be entirely balanced by particle charge so that there is no cation-cation repulsion.

3. There is no strong repulsive force between soil particles because ____________
a) Mobile cation will move along the surface
b) Cation will move opposite to each other
c) Cations replace each other
d) None of the mentioned

Answer: a
Explanation: The mobile cations will move along the particle surface of positions which is balanced by particle charge there. Therefore repulsive force does not exist.

4. The gravitational force between two soil particle is ____________
a) Proportional to charge
b) Proportional to area
c) Proportional to mass
d) Proportional to surface

Answer: c
Explanation: When the mass of the particle increases, the gravitational force acting downward on the particle increases. Hence both mass and gravitational force are proportional to each other.

5. The force causing coarse-grained soil, deposition is ____________
a) Gravitational force
b) Surface force
c) Secondary valence force
d) All of the mentioned

Answer: a
Explanation: The major force causing deposition is gravitational since the surface forces are too small to be of practical importance.

6. Coarse- grained soil may be deposited in a _____________
a) Loose state
b) Dense state
c) Solid state
d) Liquid state

Answer: a
Explanation: Coarse-grained soil may be deposited in a loose state having a high void ratio or in a dense state having a low void ratio

7. Honey comb structure exist commonly in ___________
a) Grains of silts and Rock flour
b) Coarse-grained soil
c) All of the mentioned
d) None of the mentioned

Answer: a
Explanation: Honey comb structure exists in grain of silts or rock flour smaller than 0.02 m diameter and larger than 0.0002 mm

8. The cells in the honey comb structure is made of ___________
a) Multi mineral grains
b) Single mineral grains
c) Multi layered structure
d) Platelets

Answer: b
Explanation: Each cell in the honeycomb structure is made of numerous single mineral grain.

9. The structure of honey comb might be broken down due to ___________
a) Decrease in volume
b) Increase in volume
c) Excessive volume change
d) None of the mentioned

Answer: a
Explanation: Honey comb structure might be broken down with a resulting volume increase, by driving piles in to deposit of silt of honey comb structure.

10. Which of the following is correct, with respect to honey comb structure?
a) The structure has high void ratio and It can carry out heavy load
b) It has high compact structure
c) All of the mentioned
d) None of the mentioned

Answer: a
Explanation: The honey comb structure so formed has high void ratio and is capable of carrying a relatively heavy load without excessive volume change.