61. The ultimate consolidation settlement of a soil is________________?

A. directly proportional to the voids ratio
B. directly proportional to the compression index
C. inversely proportional to the compression index
D. none of the above
✅ The correct answer is option B.

62. Within the consolidation process of a saturated clay__________________?

A. a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant
B. a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant
C. both neutral pressure and effective pressure decrease
D. both neutral pressure and effective pressure increase
✅ The correct answer is option B.

66. The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in_____________?

A. the principle of test
B. the method of taking observations
C. the method of preparation of soil suspension
D. all of the above
✅ The correct answer is option B.

68. With the increase in the amount of compaction energy________________?

A. optimum water content increases but maximum dry density decreases
B. optimum water content decreases but maximum dry density increases
C. both optimum water content and maximum dry density increase
D. both optimum water content and maximum dry density decrease
✅ The correct answer is option B.