The repulsive force in soil particle is due to ____________
(a) Particles are attracted to each other
(b) Particles are similarly charged
(c) Particles are oppositely charged
(d) None of the mentioned
I had been asked this question in an internship interview.
My question is based upon Interparticle Force in a Soil Mass in division Soil Structure and Clay Minerology of Geotechnical Engineering I