MCQOPTIONS
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MCQOPTIONS
This section includes 110 Mcqs, each offering curated multiple-choice questions to sharpen your Soil Mechanics knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
A soil mass contains 40% gravel, 50% sand and 10% silt. This soil can be classified as |
| A. | silty sandy gravel having coefficient of uniformity less than 60. |
| B. | silty gravelly sand having coefficient of uniformity equal to 10. |
| C. | gravelly silty sand having coefficient of uniformity greater than 60. |
| D. | gravelly silty sand and coefficient of uniformity cannot be determined. |
| Answer» D. gravelly silty sand and coefficient of uniformity cannot be determined. | |
| 102. |
For a saturated cohesive soil, a triaxial test yields the angle of internal friction ( ) as zero. The conducted test is |
| A. | Consolidated Drained (CD) test |
| B. | Consolidated Undrained (CU) test |
| C. | Unconfined Compression (UC) test |
| D. | Unconsolidated Undrained (UU) test |
| Answer» E. | |
| 103. |
Following statements are made on compacted soils, wherein DS stands for the soils compacted on dry side of optimum moisture content and WS stands for the soils compacted on wet side of optimum moisture content. Identify the incorrect statement. |
| A. | Soil structure is flocculated on DS and dispersed on WS |
| B. | Construction pore water pressure is low on DS and high on WS |
| C. | On drying, shrinkage is high on DS and low on WS |
| D. | On access to water, swelling is high on DS and low on WS |
| Answer» D. On access to water, swelling is high on DS and low on WS | |
| 104. |
Quick sand condition occurs when |
| A. | The void ratio of the soil becomes 1.0 |
| B. | The upward seepage pressure in soil becomes zero |
| C. | The upward seepage pressure in soil becomes equal to the saturated unit weight of the soil. |
| D. | The upward seepage pressure in soil becomes equal to the submerged unit weight of the soil. |
| Answer» E. | |
| 105. |
Which of the following statement is NOT true in the context of capillary pressure in soils? |
| A. | Water is under tension in capillary zone |
| B. | Pore water pressure is negative in capillary zone |
| C. | Effective stress increases due to capillary pressure |
| D. | Capillary pressure is more in coarse grained soils |
| Answer» E. | |
| 106. |
Group symbols assigned to silty sand clayey sand are respectively |
| A. | SS and CS |
| B. | SM and CS |
| C. | SM and SC |
| D. | MS and CS |
| Answer» D. MS and CS | |
| 107. |
The following two statements are made with respect to different sand samples having the same relative density. Identify if they are TRUE or FALSE. |
| A. | II is TRUE but I is FALSE. |
| B. | Both are FALSE statements |
| C. | Both are TRUE statements |
| D. | I is TRUE but II is FALSE. |
| Answer» E. | |
| 108. |
For a saturated sand deposit, the void ratio and the specific gravity of solids are 0.70 and 2.67, respectively. The critical (upward) hydraulic gradient for the deposit would we |
| A. | 0.54 |
| B. | 0.98 |
| C. | 1.02 |
| D. | 1.87 |
| Answer» C. 1.02 | |
| 109. |
To provide safety against piping failure, with a factor of safety of 5, what should be he maximum permissible exit gradient for soil with specific gravity of 2.5 and porosity of 0.35? |
| A. | 0.155 |
| B. | 0.176 |
| C. | 0.195 |
| D. | 0.213 |
| Answer» D. 0.213 | |
| 110. |
The range of void ratio between which quick sand conditions occurs in cohesion less granular soil deposits is |
| A. | 0.4-0.5 |
| B. | 0.6 0.7 |
| C. | 0.8-0.9 |
| D. | 1.0-1.1 |
| Answer» C. 0.8-0.9 | |