decreases with the increase in the initial voids ratio

decreases with the decrease in the plastic limit

increases with the increase in the initial voids ratio

increases with the decrease in the porosity of the soil

directly proportional to the voids ratio

directly proportional to the compression index

inversely proportional to the compression index

none of the above

10 mm

20 mm

40 mm

none of the above

drum roller

rubber tyred roller

sheep′s foot roller

vibratory roller

optimum water content increases but maximum dry density decreases

optimum water content decreases but maximum dry density increases

both optimum water content and maximum dry density increase

both optimum water content and maximum dry density decrease[ES 93]