Which one of the following statements is NOT appropriate regarding cone index:
Options:
(A) It reflects strength of soil
(B) It is a composite parameter
(C) It is dimensionless
(D) It is measured at a constant penetration rate of 30 mm/s
Official Answer Key:
C
Step-by-Step Solution & Explanation
Cone Index (CI) is the force per unit base area of the cone penetrometer, expressed in units of pressure (kPa or psi) — it is NOT dimensionless. It is a composite index reflecting soil strength, and ASAE standards specify a penetration rate of ~30 mm/s. Answer: C — the false statement.
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.