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The shape of the particle size curve is represented by _________

(a) Effective size

(b) Effective diameter

(c) Uniform coefficient

(d) Co-efficient of curvature

I have been asked this question during an interview.

Question is from Particle Size Distribution Curve in section Index Properties Determination of Geotechnical Engineering I

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Best answer
Right choice is (d) Co-efficient of curvature

Easiest explanation: Coefficient of the curvature Cc represent the shape of the particle size curve given by CC = (D40)2/D10×D30.

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