$1-$

Flexible type retaining wall is:

$($a$)$ Counterfort wall

$($b$)$ Anchored type wall

$($c$)$ Buttress wall

$($d$)$ Cantilevered rigid wall

$2-$ Which of the following failure mode is not applicable for flexible retaining walls?

$($a$)$ Deep$-$seated Failure

$($b$)$ Sliding failure

$($c$)$ Rotational Failure

$($d$)$ Bending failure

$3-$

Which of below factor does not impact lateral earth pressure co$-$efficient at rest of retaining wall:

$($a$)$ Wall friction

$($b$)$ Soil friction angle

$($c$)$ Soil density

$($d$)$ Water table

$4-$

Earthquakes will induce slope failure:

$($a$)$ Under drained condition

$($b$)$ Under Undrained condition

$($c$)$ Under partially drained condition

$($d$)$ None of the above