Question

The recommended time interval for the drainage in pipette analysis is __________

(a) 1/2,1,2,4,8,15, and 30 min

(b) 2,4,6,12,20 and 30 min

(c) 1,8,16,24 min

(d) 24,30,34,40,46 min

This question was addressed to me in a national level competition.

My question is taken from Pipette Method in portion Index Properties Determination of Geotechnical Engineering I

Answer 1

The correct answer is (a) 1/2,1,2,4,8,15, and 30 min

To explain: The time interval for drainage of water in pipette analysis is ½, 1,2,4,8, 15 and 30 min.