$1\mathrm{.}2.$ A laboratory study showed that a soil has the following physical properties:

$\backslash$table$[[,$Sieve No$.,$Soil, Percentage Passing$],[,4,100],[10,100,],[20,98\mathrm{.}1,],[40,96\mathrm{.}5,],[60,95,],[100,90\mathrm{.}4,],[,200,85\mathrm{.}5],[,,],[$moisture content,,$],[$moist unit weight,,$],[$specific gravity of the solids,$=21$ percent,$],[$plastic limit$,,=2\mathrm{.}75$