Structures in Clay Minerals – MCQ

Structures in Clay Minerals – MCQ

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

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Clay Minerals

2. The kaolinite mineral is formed by the breakdown of

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

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a) Feldspar

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

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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

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c) Al4Si4O10(OH)8

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

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a) KAl4 AlSi7 O20(OH)4

6. Most of the clay minerals consist of a

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

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a) Silica tetrahedron

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

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a) Isomorphous substitution

8. A tetrahedron has __ numbers of faces.

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

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b) 4

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

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c) 7 A0

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

a) Stronger
b) Weaker

View Answer

a) Stronger

Read Also:

Read Also:

Structural Clay Products – MCQ

Origin and Formation of Soils – MCQ

6 Purposes of Soil Exploration

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