SANS $3001-$GR$10-$ Atterberg limits test $($Liquid Limit, Plastic Limit & Plasticity Index, Linear Shrinkage$)$

$2\mathrm{.}1.$ What is the purpose of the Atterberg limits test on soil materials?

$2\mathrm{.}2.$ Briefly explain how the test sample is prepared.

$2\mathrm{.}3.$ What factors can affect the accuracy of Atterberg limits test results? $(4)$

$2\mathrm{.}4.$ Provide calculations and results. $($Liquid Limit, Plastic Limit, Plasticity Index and Linear Shrinkage.