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in Geotechnical Engineering I by (102k points)
A soil mass in a three-phase system consists of ______

(a) solids, water and air

(b) sand, gravel and air

(c) solids and water only

(d) solids and air only

I had been asked this question in exam.

The question is from Soil as Three Phase System topic in portion Preliminary Definitions and Relationships of Geotechnical Engineering I

1 Answer

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by (727k points)
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Best answer
The correct answer is (a) solids, water and air

Explanation: Solids and water, solids and air are two-phase systems. Sand, gravel and air are not the phases. Solids, water and air are considered to be a three-phase system of the soil mass.

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