Free Printable Day 73-Dec 8-worksheet-Btech-Soil classification

1.

In IS soil classification, a soil is termed fine-grained if:

a)

More than 30% passes 4.75 mm

b)

More than 80% passes 0.425 mm

c)

More than 50% passes 75 μm sieve

d)

More than 20% passes 2 mm sieve

2.

For the textural triangle, a soil containing 60% sand, 30% silt and 10% clay will be placed in which broad textural class?

a)

Sandy clay

b)

Sandy loam

c)

Clay loam

d)

Silty sand

3.

In Unified Soil Classification, “SM” denotes:

a)

Well-graded sand

b)

Silty sand

c)

Clayey sand

d)

Silt with medium plasticity

4.

A soil contains 40% gravel, 50% sand and 10% silt. $D_{10}=0.075\,\text{mm}$ and $D_{60}=4.75\,\text{mm}$ . The uniformity coefficient is approximately:

(a)

5.

According to AASHTO, a higher Group Index (GI) value indicates:

a)

Superior pavement quality soil

b)

Highly organic soil

c)

Poorer pavement material

d)

Soil with low compressibility

6.

Coarse sand corresponds to the size range:

a)

$2\ \text{mm}$ – $0.6\ \text{mm}$

b)

$0.6\ \text{mm}$ – $0.2\ \text{mm}$

c)

$0.2\ \text{mm}$ – $0.06\ \text{mm}$

d)

$0.06\ \text{mm}$ – $0.02\ \text{mm}$

7.

Statement: In USCS, the classification of fine-grained soil depends primarily on Atterberg limits rather than grain size. True or False?

a)

True

b)

False

8.

Statement: According to IS classification, particles smaller than $0.002\ \text{mm}$ are classified as silt. True or False?

a)

True

b)

False

9.

Particles of size between _____ mm and _____ mm are classified as coarse silt.

(a)

10.

In IS soil classification, particles smaller than (a) µm are treated as fines.

11.

On the plasticity chart, the A-line is given by the equation $I_p = \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ (W_L - 20)$ .

(a)

12.

In USCS, the suffix “W” in symbols like GW or SW indicates a (a) soil.

13.

If sieve analysis shows about $98\ \%$ of the mass passing the $4.75\ \text{mm}$ sieve, the major soil fraction is (a) .

14.

A soil sample has $D_{60}=2.40\ \text{mm}$ and $D_{10}=0.08\ \text{mm}$ . Compute the uniformity coefficient (Cu)

(a)

15.

A fine-grained soil has $W_L=55\%$ and $W_P=22\%$ . Using the A-line equation , determine the plasticity index, whether the soil lies above or below the A-line, and the resulting soil classification among CH, CL, MH, ML.

(a)

Day 73-Dec 8-worksheet-Btech-Soil classification

Total questions: 15

Worksheet time: 12mins

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