Building Materials Online Test – Multiple Choice Questions and Answers 1. Pick up the in-correct statement from the following: The soils which contain montmorillonite minerals possess high coefficient of internal coefficient possess high plasticity shrink more when dry swell more when wet 2. The Westergaard analysis is used for stratified soils clayey soils sandy soils cohesive soils 3. A partially saturated soil is classified as one phase soil two phase soil three phase soil four phase soil 4. A pile is being driven with a drop hammer weighing 1800 kg and having a free fall of 1.00 m. If the penetration with last blow is 5 mm, the load carrying capacity of the pile, -according to the Engineering News formula, is 10tonnes 20tonnes 50tonnes 100tonnes 5. For determing the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled = 850 g water filled in pycnometer up to top The specific gravity of soil soilds, is 2.0 2.25 2.50 2.75 6. The ratio of the volume of voids to the total volume of the given soil mass, is known void ratio porosity water content specific gravity 7. Pick up the correct statement from the following: Kaolinite is most stable clay Kaolinite when wet, becomes moderately plastic because negative electro magnetic charges on platelets attrack water Kaolinite shows a very little sign of swelling on wetting all of these 8. For shear strength, triaxial shear test is suitable because state of stress within the specimen during any stage of the test as well as at failure, is completely determined precise measurement of the pore pressure and volume change during the test is possible it can be performed under all three drainage conditions all of these 9. Number of piles required to support a column, is 1 2 3 4 10. Pick up the correct statement from the following: In perfectly saturated soil, the voids are completely filled with water In dry soil, the voids are completely filled with air The void space between the soil grains, is filled partly with air and partly with water all of these Loading … Question 1 of 10
