Civil Engineering - UPSC Civil Service Exam Questions - Discussion


The standard plasticity chart to classify fine grained soils is shown in the given figure. The area marked 'X' represents

[A]. silt of low plasticity
[B]. clay of high plasticity
[C]. organic soil of medium plasticity
[D]. clay of intermediate plasticity

Answer: Option C


No answer description available for this question.

Rakesh said: (May 24, 2016)  
Option D is the correct answer, because organic soil lies below A-line.

Penny said: (Apr 10, 2017)  
Yes, Option D is the correct answer.

Dolly said: (Apr 1, 2018)  
D is the correct answer.

Vikram Syal said: (Aug 23, 2018)  
Organic soil is never above A-line. So option c is wrong.

Above A line and liquid limit is > 35% CI (clay with intermediate comprehensibility) occurs. So, option D is right.

Sudhir Shaw said: (Feb 21, 2019)  
Above A-line clay soil classification is done and below A-line organic/silt classification is done. So, option (D) is correct.

Vetan said: (Dec 15, 2019)  
Inorganic clay shows always above the A-line.

Organic silt shows always below the A-line.

Black cotton soil is partially below or partially above the A-line.

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