Auger boring is used in ______ type of soil.

If σ’ is the effective overburden pressure, then the effective penetration resistance is given by _________

In Dutch cone test, the base of cone is ________ cm in diameter.

In the open drive samples, the tube head is provided with vents.

The commonly used geophysical method for site exploration is ____

Example of modification of soil property with the help of admixtures is _____

In a blind zone, the geophone cannot detect the seisdmic refraction.

Auger is suitable for ___