Choose the correct answer Q3/A- Choose the correct answer1. Subsurface exploration is necessary for(a) selecting the type and depth of foundation for a given structure.(b) evaluating the load-bearing capacity of the foundation.(c) estimating the probable settlement of the foundation.(d) all of the above.2. The approximate spacing of boreholes for highway projects is(a) 10 – 30 m. (b) 20 – 60 m. (c) 40 – 80 m. (d) 250 – 500 m.3. Which of the following is the simplest method of making exploratory boreholes?(a) Auger boring (b) Wash boring (c) Percussion drilling (d) Rotary drilling4. Disturbed soil samples cannot be used for(a) grain-size analysis. (b) specific gravity of soil solids. (c) classification.(d) hydraulic conductivity.3. The soil sample collected by a sampler is generally considered to be undisturbed when thearea ratio is(a) less than 10%. (b) equal to or less than 10%. (c) greater than 10%.(2) e9ual to or greater tham lo0 %. 6. The split-spoon samples are generally taken at intervals of about(a) 0.5 m. (b) 1.0 m. (c) 1.5 m. (d) 3.0 m.7. If the numbers of blows required for the penetration of a split-spoon sampler into the soildeposit for three 152.4-mm consecutive intervals are 8, 12 and 10, the standardpenetration number (N) will be(a) 18. (b) 20. (c) 22. (d) 30.8. Which of the following field tests does not require a borehole?(a) Cone penetration test (CPT) (b) Standard penetration test (SPT)(c) Pressuremeter test (PMT) (d) All of the above9. After completion of the boring in a highly permeable soil deposit, the level of water in theborehole generally stabilizes in(a) 1 h. (b) 24 h. (c) 1 week. (d) more than one week.10. The standard penetration number measured in the field is required to be corrected for(a) hammer efficiency. (b) borehole diameter and rod-length. (c) sampling method.(d) all of the above.

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Q3/A- Choose the correct answer 1. Subsurface exploration is necessary for (a) selecting the type and depth of foundation for a given structure. (b) evaluating the load-bearing capacity of the foundation. (c) estimating the probable settlement of the foundation. (d) all of the above. 2. The approximate spacing of boreholes for highway projects is (a) 10 - 30 m. (b) 20 – 60 m. (c) 40 - 80 m. (d) 250 – 500 m. 3. Which of the following is the simplest method of making exploratory boreholes? (a) Auger boring (b) Wash boring (c) Percussion drilling (d) Rotary drilling 4 Disturhed soil san