Ex. 3_Soil Classification

A fine grained soil has liquid limit = 80% and plastic limit = 30%. The soil classification according to USCS is …..

• CH
• MH
• CL
• ML

A fine grained soil has liquid limit = 40% and plasticity index = 30%. The soil classification according to USCS is …..

• CH
• MH
• CL
• ML

For Soil A: CI = 0.8 and w = 40%, Soil B: CI = 0.5 and w = 20%. Then, .….. has the highest strength

• Soil A
• Soil B

For Soil A: relative density = 80% and e = 0.80, Soil B: relative density = 40% and e = 0.50. Then, .….. has the highest strength

• Soil A
• Soil B

If the sand in-situ is in its loosest state, then the relative density of sand is ……….

• zero
• 1
• 1.2
• -0.05

If the natural water content of soil mass lies between its dry condition and shrinkage limit, the soil mass is said to be in ….............

• Liquid state
• Plastic state
• solid state
• semi-solid state

If the clay in-situ is in its softest state, then the consistency index of clay is …………

• 0.25
• 0.5
• 1
• 1.5

….............. is the transition from the plastic state to the semi-solid state

• Liquid limit
• Plastic limit
• shrinkage limit

…............... is defined as the water content at which the clay can just be rolled to threads of 3 mm diameter.

• Liquid limit
• Plastic limit
• shrinkage limit

…............. is the moisture content at which the groove, formed by a standard tool into the sample of soil taken in the standard cup, closes for 0.5 inch on being given 25 blows in a standard manner. 

• Liquid limit
• Plastic limit
• shrinkage limit