Bearing Capacity Failure of Soils – MCQ

1. What do you understand by the term “Bearing Capacity of Soil”?

a) Capacity of soil to retain water.
b) Capacity of soil to support loads.
c) Compressibility of soil.
d) None of the above.

2. According to Vesic’s observations, how many types of bearing capacity failures are there?

a) 2(Two).
b) 4(Four).
c) 3(Three).
d) 5(Five).

3. In which condition general shear failure is normally seen?

a) Soils having high compressibility.
b) Soils having high moisture content.
c) Soils having low compressibility.
d) Soils having a low density.

4. Which one of the following is not a property of general shear failure?

a) Failure is accompanied by tilting of the footing.
b) Failure is sudden with pronounced peak resistance.
c) Ultimate bearing capacity is not well defined.
d) None of these

5. Soils having high compressibility can induce,

a) General shear failure.
b) Local shear failure.
c) Uncertain failures.

6. Local shear failure can also be expected in,

a) Soils having low compressibility.
b) Soils having moisture content between 35% to 70%.
c) Sand having relative density lying between 35% to 70%.
d) None of the above.

7. Which one of the following is a characteristic of local shear failure?

a ) Ultimate bearing capacity is well defined.
b ) Ultimate bearing capacity is not well defined.
c ) Failure is defined by small settlements.
d) Failure is sudden.

8. If the foundation is located at considerable depth, which of the following soil types can induce punching shear failures?

a) Soil having high moisture content.
b) Soil having low compressibility.
c) Soil having high compressibility.
d) Soil having low moisture content.

9. Punching shear failure may take place in the case of loose sand having a density __

a) Less than 35%.
b) Between 35% and 70%.
c) More than 70%.
d) None of the above.

10. Which one of the following is a characteristic of punching shear failure?

a) The pattern of failure is clearly observed.
b) There is no bulging of soil around the footing.
c) Failure is defined by small settlements.
d) Ultimate bearing capacity is well defined.

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Structures in Clay Minerals – MCQ

Structures in Clay Minerals – MCQ

1. The clayey soil is formed by the chemical weathering of

2. The kaolinite mineral is formed by the breakdown of

a) Feldspar
b) Chlorite
c) Amorphous
d) None of these

3. Which of the following statement is true

a) Clay mineral is the colloidal size (<0.002 mm)
b) Clay mineral having a high specific surface
c) Clay minerals are of the flaky form
d) All of these

4. What is the chemical composition of kaolinite?

a) Al₄Si₄ O₁₀(OH)₈ .4H₂O
b) Al₄Si₈ O₂₀(OH)₈ .nH₂O
c) Al₄Si₄O₁₀(OH)₈
d) Al₂Si₄O₁₀(OH)₂

5. What is the chemical composition of Illite?

a) KAl₄ AlSi₇ O₂₀(OH)₄
b) Al₄Si₈ O₂₀(OH)₈ .nH₂O
c) Al₄Si₄ O₁₀(OH)₈ .4H₂O
d) Al₂Si₄O₁₀(OH)₂

6. Most of the clay minerals consist of a

a) Silica tetrahedron
b) Silica octahedron
c) Alumina tetrahedron
d) None of these

7. The reaction by which silicon and aluminium are partially replaced by other elements is known as.

a) Isomorphous substitution
b) Isomorphic substitution
c) Isotropic Interchange
d) None

8. A tetrahedron has __ numbers of faces.

a) 2
b) 4
c) 6
d) 8

9. In case of kaolinite, clay mineral particles. The thickness of each stack of silica and alumina is about.

a) 3 A⁰
b) 5 A⁰
c) 7 A⁰
d) 9 A⁰

10. The hydrogen bond of kaolinite clay minerals is —– than the potassium bond of illite clay minerals.

a) Stronger
b) Weaker

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Origin and Formation of Soils – MCQ

6 Purposes of Soil Exploration

Origin and Formation of Soils – MCQ

1. The soil which is deposited at its own place of origin is known as

a) Transported soil
b) Aeolian soil
c) Residual soil
d Glacial soil

2. The soil which is deposited at the place other than its origin is known as

a) Transported soil
b) Residual soil
c) Both (a) and (b)
d) None of these

3. Which soil is transported and deposited by ice?

a) Lacustrine soil
b) Aeolian soil
c) Residual soil
d) Glacial soil

4. The rate of chemical weathering depends on the

a) Surface area
b) Temperature
c) Amount of water
d) All the above

5. The soil that has been transported from its place of origin by water is known as.

a) Residual soil
b) Aeolian soil
c) Alluvial soil
d Glacial soil

6. The soil which is transported and deposited by wind is called

a) Residual soil
b) Aeolian soil
c) Lacustrine soil
d) Marine soil

7. What are the three main types of chemical weathering?

a) Solution, hydration, and reduction
b) Solution, reduction, and chelation
c) Hydrolysis, carbonation, and oxidation
d) Solution, carbonation, and oxidation

8. Carbonic acid is formed due to the reaction between ____

a) Carbon dioxide and SO₂
b) Carbon dioxide and NO₂
c) Carbon dioxide and N₂O₃
d) Carbon dioxide and H₂O

9. The process of breakdown of rock by acidic water is known as

a) Hydrolysis
b) Carbonation
c) Oxidation
d) Chelation

10. The process of breakdown of rocks by oxygen and water is

a) Hydrolysis
b) Oxidation
c) Carbonation
d) Chelation

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Soil Map of India – MCQ

1. Where is alluvial soil mostly found in India?

a) Madhya Pradesh
b) Tapti River Plain
c) Indo-Gangetic-Brahmaputra plains
d) Andhra Pradesh State

2. Alluvial soil is formed by the action of

a) Heavy Rainfall
b) Heavy Wind
c) Snow Fall
d) Running Water

3. Which of the following soil contains lots of minerals and humus

a) Alluvial Soils
b) Black cotton soils
c) Desert soils
d) Red soils

4. On which soil most Indian crops are grown?

a) Alluvial Soils
b) Black cotton soils
c) Desert soils
d) Hill soils

Note: In India, Alluvial Soils is most suitable for agriculture

5. Where is black cotton soil mostly found in India?

a) Gujarat & Madhya Pradesh
b) Andhra Pradesh & Odisha
c) Uttar Pradesh
d) None of these

6. Where is Desert soil mostly found in India?

a) Rajasthan
b) Odisha
c) West Bengal
d) Sikkim

7. In West Bengal which soil is mostly found?

a) Desert soils
b) Black cotton soils
c) Alluvial Soils
d) Hill soils

8. In Punjab state, which soil is mostly found?

a) Alluvial Soils
b) Black cotton soils
c) Desert soils
d) Red soils

9. In Odisha which soil is mostly found?

a) Alluvial Soils
b) Black cotton soils
c) Desert soils
d) Red soils

10. Why the red soil is red in color?

a) Due to high lime content
b) Due to high iron oxide content
c) Due to high phosphate content
d) None of these

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Origin and Formation of Soils – MCQ

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Proctor Compaction Test – MCQ

1. Who was the first person to demonstrate the relation between the water content and dry density of the soil

a) Proctor
b) William Albrecht
c) Charles Darwin
d) Selman Waksman

2. The capacity of the mould used in the Standard Proctor Compaction Test is

a) 1/20 cft
b) 1/30 cft
c) 1/36 cft
d) 1/42 cft

3. The volume of mould in standard proctor test is

a) 1.415 Liter
b) 0.944 Liter
d) 0.787 Liter
e) 0.674 Liter

[Note – Question number (2) and (3) both are the same, the only difference is their unit. In the second question, it is in ‘cft’, and in 3 question it is in ‘Liter’.]

4. Dimensions of mould used in standard proctor compaction test is

a) Dia 4 inches, and height 4.6 inches
b) Dia 4.6 inches, and height 4 inches
c) Dia 4.3 inches, and height 4.6 inches
d) Dia 4 inches, and height 4.3 inches

5. How many blows of rammer are recommended for each layer in case of a standard proctor test?

a) 15
b) 25
c) 27
d) 35

6. The weight of the rammer used in the standard proctor compaction test is

a) 1.5 lb
b) 2.5 lb
c) 3.5 lb
d) 5.5 lb

7. In standard proctor test, the rammer is allowed to fall under gravity from a height of

a) 8 inches
b) 12 inches
c) 14 inches
d) 18 inches

8. The weight of the rammer used in case of modified proctor test is

a) 5.5 lb
b) 6.6 lb
c) 10 lb
d) 12 lb

9. In modified proctor test, the rammer is allowed to fall under gravity from a height of

a) 8 inches
b) 12 inches
c) 14 inches
d) 18 inches

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