Directions : Select your answer to following question using the codes given below :
Codes :
Assertion A : The phenomenon of quicksand occurs mostly in coarse sands and gravels.
Reason R : Quicksand condition does not occur in clayey soils as their cohesion holds the grains together even under upward flow at critical hydraulic gradient.
1
Both A and R are true and R is the correct explanation of A
2
Both A and R are true and R is not correct explanation of A
3
A is true but R is false
4
A is false but R is true
5
Question Not Attempted