Engineering Questions with Answers - Multiple Choice Questions

# Geotechnical Engineering MCQs – Determination of Liquid and Plastic Limit

1 - Question

1. The grooving tool which is used for finding liquid limit is _________ a) ASTM tools b) Grooving tools c) All of the mentioned d) None of the mentioned
View Answer Answer: a Explanation: ASTM tool and casagrande tools are two types of grooving tools are used in determining liquid and plastic limit.

2 - Question

2. The depth of the groove cut by casagrande tool for determining the liquid limit is ______ a) 10 mm b) 11.0 mm c) 2 mm d) 8 mm

3 - Question

3. The type of tools which is preferred for sandy soil for the purpose of grooving is _______ a) ASTM tool b) Casagrande tool c) All of the mentioned d) None of the mentioned
View Answer Answer: a Explanation: ASTM tool is used only for more sandy soil, where the Casagrande tool tends to tears the side of the groove.

4 - Question

4. What is the diameter of the sieve that is used for finding the liquid limit? a) 275 microns b) 700 microns c) 425 microns d) 200 microns

5 - Question

5. The soviet liquid limit device is based on the principle of ___________ a) Station penetration b) Soil moisture c) Soil water content d) None of the mentioned

6 - Question

6. The toughness index (It) is defined by the ratio of __________ a) It=WP/IP b) It=IP/If c) It=IF/IP d) It=WL/If

7 - Question

7. The number of revolutions per second, at which the handle is rotated in process of finding the liquid limit is _________ a) 2 b) 7 c) 4 d) 9

8 - Question

8. The cone which is used to penetrate the soil pat has a central angle of ___________ a) 26 degree b) 30 degree c) 31 degree d) 40 degree

9 - Question

9. The plastic index is calculated from the relation ____________ a) IP = WP-WL b) IP = WL-WP c) IP= IL-IS d) IP=IW-IS

10 - Question

10. One-point method, used for determining the liquid limit is majorly applicable for finding ________ a) Accurate value b) Precise value c) Rough value d) None of the mentioned
View Answer Answer: c Explanation: Since the liquid limit is found out by only one reading of water content and its corresponding number of blows. One point method is applicable for finding rough value.

11 - Question

11. The shear strength of the soil, at the liquid limit is ________ a) 1.75 kN/m2 b) 1.89 kN/m2 c) 17.9 kN/m2 d) 17.6 g/cm2
View Answer Answer: d Explanation: The shear strength of the soil is about 17.6 g/cm2 which the penetrometer gives for a depth of 25 mm under a total sliding mass of 148 g.

12 - Question

12. The apparatus used for finding, WL value by static cone penetrometer method is _________ a) Liquid limit apparatus b) Pycnometer c) Cone penetration d) Rubber balloon cylinder