$($a$)$ Mention four activities that fall with the scope of geotechnical engineering.

$[2$ marks$]$

$($b$)$ Name three mechanical properties of soils.

$[2$ marks$]$

$($c$)$ Why do geotechnical engineers pay attention to index properties instead of directly measuring the mechanical properties of soils?

$[2$ marks$]$

$($d$)$ What are intrinsic index properties and provide three examples of intrinsic index properties.

$[2$ marks$]$

$($e$)$ What are extrinsic index properties and provide three examples of extrinsic index properties.

$[2$ marks$]$

$($f$)$ What are the two most common methods used in soil mechanics to measure particle size?

$|$~$1|$ marks ~$||$

$($g$)$ What is the plasticity developed by clay particles due to$?$

$[2$ marks$]$

$($h$)$ What is the main process responsible for formation of organic soils, and why are organic soils not useful from a geotechnical point of view?

$[1$ marks$]$