STUDY LESSON:-43 [CIVIL ENGINEERING]
For Competitive exams/Govt. jobs/Semester exam/Self Study Purpose
1. Which among these clay mineral exerts the swelling behavior of black cotton soil?
a) Halloysite b) Kaolinite c) Illite d) Montomorillonite
2. The shape of clay particle is generally
a) Flaky b) Angular c) Rounded d) tubular
3. Compaction through vibratory roller is suitable for
a) well graded dry sand b) silt of high compressibility c) moist silty sand d) none of these
4. If a compaction is increased in a compaction test, the optimum moisture content will be
a) decreased b) remain same c) increase d) increased first then decrease
5. The unit weight of a soil at a zero air void condition depends upon the factor
a) specific gravity b) unit weight of water c) water content d) All of these
6. Root time method is used to determine
a) Coefficient of consolidation b) time factor c) Coefficient of compressibility d) All of these
7. Piping phenomenon occurs when
a) sudden change in permeability occurs b) OMC decreases c) effective pressure becomes zero d) none of these
8. Sand drains are usually used to
a) increase the permeability b) reduce the settlement c) accelerate the consolidation d) disperse the load
9. Skin friction and point bearing resistance is measured by the test ____________
10. Elastic constant are measured by ___________
Answers:-
1. d) Montomorillonite
2. a) Flaky
3. a) well graded dry sand
4. a) decreased
5. d) All of these
6. a) Coefficient of consolidation
7. c) effective pressure becomes zero
8. c) accelerate the consolidation
9. cyclic pile load test
10. Pressure meter test
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