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ESE 2021 Technical Quiz || Classification and Structure of Soil

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Question 1

Consider the following points related to unified soil classification system:

(i) The soil particles above 4.75 mm termed as coarse grained soil.

(ii) The soil particle below 4.75 mm are fine grained soil.

Which of the above statements are correct?

Question 2

Consider a soil sample having percentage of particle passing 75-micron sieve are 64%. If the liquid limit and plastic limit of the soil is 32% and 24% respectively, the soil will be classified as

Question 3

From the sieve analysis of a soil, following results are obtained.

Percentage passing through 4.75 mm sieve = 45%

Percentage passing through 75 micron sieve = 4%

Coefficient of uniformity = 5.43

Coefficient of curvature = 2.56

From the above results it can be concluded that

(i) It is a coarse grained soil.

(ii) The soil is well graded.

Which of the above statements are true?

Question 4

A montmorillonite mineral has a specific surface/volume equal to

Question 5

The nature of surface bonding force in soil is classified into how many types.
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