Question

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

The question was asked during an interview.

My query is from Determination of Liquid and Plastic Limit in chapter Index Properties Determination of Geotechnical Engineering I

Answer 1

Right choice is (b) 11.0 mm

The explanation: The casagrande tools cut a groove of size 11.0 mm wide at the bottom.