soil-mechanics-and-foundation-engineering civil-engineering question and answers -Page 7

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Home Aptitude

1. Pick up the correct statement from the following:
Options
A. Kaolinite is most stable clay
B. Kaolinite shows a very little sign of swelling on wetting
C. Kaolinite when wet, becomes moderately plastic because negative electro magnetic charges on platelets attrack water
D. Kaolinite is also called China clay
E. All the above.

2. 260 g of wet soil was taken in a pycnometer jar of weight 400 g in order to find the moisture content in the soil, with specific gravity of soil particles 2.75. The weight of soil and remaining water filled in pycnometer without air bubbles was 1415 g and the weight of pycnometer filled with water alone was 1275 g. The moisture content in the soil is
Options
A. 24.2%
B. 18.2%
C. 53.8%
D. none of these.

4. Pick up the in-correct statement from the following: The soils which contain montmorillonite minerals
Options
A. swell more when wet
B. shrink more when dry
C. possess high plasticity
D. possess high coefficient of internal coefficient
E. None of these.

6. Pick up the correct statement from the following:
Options
A. The property of a soil that enables it to become stiff in a relatively short time on standing is called thixotropy
B. The ratio of shear strength in natural state to the remoulded shear strength under undrained conditions, is called degree of sensitivity.
C. The difference between the undisturbed shear strength and remoulded shear strength is known remoulding loss
D. The tendency of dense sand to expand on application of shearing load, is known as dilatancy
E. All the above.

9. For shear strength, triaxial shear test is suitable because
Options
A. it can be performed under all three drainage conditions
B. precise measurement of the pore pressure and volume change during the test is possible
C. stress distribution on the failure plane, is uniform
D. state of stress within the specimen during any stage of the test as well as at failure, is completely determined
E. all the above.

10. The ratio of the difference between the void ratio of the soil in its loosest state and its natural void ratio (e) to the difference between the void ratios in the loosest and fully dense state, is generally termed as
Options
A. degree of density
B. relativity
C. density index
D. all the above.

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