Question $5$ b$.$

$5$ Marks

A soil was tested in the laboratory and the data are:$-$

a$)$ percentage passing $75$ micron sieve $=60\%$; b$)$ Liquid limit$,w_L=40\%$;

c$)$ plastic limit$,w_p=20\%.$

Classify the soil as per Indian Standard Soil classification system.

$3$