Question

Assertion (A): A soil is at its liquid limit if the consistency index of the soil is equal to zero.

Reason (R): The consistency index of a soil is defined as ratio of (liquid limit minus the natural water content) to (natural water content minus plastic limit).

• A. both A and R are true and R is the correct explanation of A
• B. both A and R are true but R is not a correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is C A is true but R is false

(c)

$ForW=W_L$

$Consistencyindex=\frac{W_L-W}{W_L-W_P}=0$