Question

What will be the porosity of a soil sample whose void ratio is 0.35?

(a) 19.5%

(b) 40.65%

(c) 25.9%

(d) 30%

This question was addressed to me during an online interview.

My doubt stems from Void Ratio, Porosity and Degree of Saturation in division Preliminary Definitions and Relationships of Geotechnical Engineering I

Answer 1

Right option is (c) 25.9%

The explanation is: Given,

Void ratio e=0.35

Porosity \(n = \frac{e}{1+e}\)

\(n = \frac{0.35}{1+0.35}\)

\(n = \frac{0.35}{1.35}\)

\(\)n=0.259

In percentage n=25.9%.