List of top Geotechnical Engineering Questions on Sub-surface investigations

To obtain an undisturbed clay soil sample, an Area Ratio of 10 % needs to be achieved for a thin walled sampling tube. If the outer diameter of the tube is 50.8 mm, the inner diameter (in mm) is (rounded off to one decimal place).
The name of a person in Column 1 is to be matched with the test mentioned in Column 2.
Column 1Column 2
(I) Menard(P) Dilatometer test
(II) Marchetti(Q) Pressuremeter test
(III) Casagrande(R) Compaction test
(IV) Proctor(S) Liquid limit test
Option giving the CORRECT match between Column 1 and Column 2 is: