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
This question was addressed to me in a national level competition.
I'm obligated to ask this question of Determination of Liquid and Plastic Limit in chapter Index Properties Determination of Geotechnical Engineering I