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A fine-grained soil with LL of 20 and PI of 6 will be classified as — Answer & Solution | Civexa

Soil Mechanics · Soil Classification

Soil Classification MCQ with answer and solution

A fine-grained soil with LL of 20 and PI of 6 will be classified as

Solution

Concept

CL-ML classification

Step-by-step solution

1. LL = 20, PI = 6: PI lies on the A-line hatched zone (4–7). 2. Classified as CL-ML.

Explanation

Low-plasticity silty clay.

Why the other options are wrong

MH and CH need LL > 50; CL needs PI > 7.

Shortcut

PI 4–7 above A-line = CL-ML.

Correct answer: C) CL - ML

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