The standard penetration test is performed in clear hole of _________ mm in diameter.

For transport of sample to laboratory, the sample is ____

Auger boring is most suitable for ______ type of work.

In detailed exploration, the field test is conducted to determine ____

Electrical resistivity method is based on measurement of _________

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

The depth of exploration for isolated spread footing is _______

The important factor affecting soil cement is________