# Civil Engineering - Soil Mechanics and Foundation Engineering

Exercise : Soil Mechanics and Foundation Engineering - Section 5
26.
Pick up the correct statement from the following:
The range of water content between the liquid limit and plastic limit, is called plasticity index.
The ratio of the liquid limit minus the natural water content to the plasticity index of soils, is called consistency index
The ratio of natural water content minus its plastic limit to its plasticity index is called liquidity index
The ratio between plasticity index and flow index (i.e. slope of flow curve in case of liquid limit), is called toughness index
All the above.
Explanation:
No answer description is available. Let's discuss.

27.
'Talus' is the soil transported by
wind
water
glacier
gravitational force.
Explanation:
No answer description is available. Let's discuss.

28.
A triaxial shear test is prefered to direct shear test, because
it can be performed under all three driange conditions with complete control
precise measurement of pore pressure and change in volume during test, is not posible
stress distribution on the failure plane, is non uniform
none of these.
Explanation:
No answer description is available. Let's discuss.

29.
Pick up the correct statement from the following:
When stress decreases, void, ratio decreases
When stress decreases, coefficient of permeability decreases
When stress decreases, coefficient of volume change decreases
When stress decreases void ratio, co-effi-cients of per-meability and volume change decrease.