Which of the following soils has more plasticity index ? clay silt sand gravel TRUE ANSWER : ? YOUR ANSWER : ?
A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively 0.05 N/mm² and 0° 0.05 N/mm² and 45° 0.2 N/mm² and 0° 0.5 N/mm² and 30° TRUE ANSWER : ? YOUR ANSWER : ?
If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is 0.8 1 0.6 0.4 TRUE ANSWER : ? YOUR ANSWER : ?
In a triaxial compression test when drainage is allowed during the first stage (i. e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as consolidated drained test unconsolidated undrained test consolidated undrained test unconsolidated drained test TRUE ANSWER : ? YOUR ANSWER : ?
In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on horizontal plane only both horizontal and vertical planes all planes except horizontal and vertical planes vertical plane only TRUE ANSWER : ? YOUR ANSWER : ?
Constant head permeameter is used to test permeability of coarse sand fine sand silt clay TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following clays behaves like a dense sand ? over-consolidated clay with a low over-consolidation ratio over-consolidated ciay with a high over-consolidation ratio normally consolidated clay under-consolidated clay TRUE ANSWER : ? YOUR ANSWER : ?
A plane inclined at an angle ‘φ’ to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as Repose line All listed here The φ line Natural slope line TRUE ANSWER : ? YOUR ANSWER : ?
The admixture of coarser particles like sand or silt to clay causes decrease in both liquid limit and plasticity index decrease in liquid limit and no change in plasticity index increase in both liquid limit and plasticity index decrease in liquid limit and increase in plasticity index TRUE ANSWER : ? YOUR ANSWER : ?
If the water table rises upto ground surface, then the effective stress is reduced due to increase in pore water pressure only but total stress does not change total stress is reduced due to increase in pore water pressure only but effective stress does not change effective stress is reduced due to decrease in total stress only but pore water pressure does not change total stress is increased due to decrease in pore water pressure but effective stress does not change TRUE ANSWER : ? YOUR ANSWER : ?