Soil Mechanics and Foundation
The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is

Vertical if the soil is in an active state of plastic equilibrium
None of these
Vertical if the soil is in a passive state of plastic equilibrium
Inclined at 45° to the vertical plane

ANSWER DOWNLOAD EXAMIANS APP

Soil Mechanics and Foundation
With the increase in the amount of compaction energy

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

ANSWER DOWNLOAD EXAMIANS APP