CSS :: Soils and Topography
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1. |
The word Soil means: |
A. |
Natural body which is composed of a mixture of organic and inorganic matter in which plants and other living organism grow |
B. |
The unconsolidated mineral material on the surface of earth that serves as natural medium for land plants |
C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option C
Explanation:
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2. |
Soils are classified on the basis of physical properties which determine: |
A. |
Productive capacity |
B. |
Supporting power |
C. |
Mointure storage capacity |
D. |
Nutrients availability |
E. |
All of the above |
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Answer: Option E
Explanation:
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3. |
Physical properties which are subjected to change by silvicultural operations are: |
A. |
Soil structure |
B. |
Soil texture |
C. |
Porosity |
D. |
Soil colour |
E. |
All of the above |
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Answer: Option G
Explanation:
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4. |
Effects/influences/functions of soil structure are: |
A. |
Water holding capacity |
B. |
Aeration |
C. |
Porosity |
D. |
Heat transfer |
E. |
All of the above |
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Answer: Option F
Explanation:
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5. |
The major types of soil structure are: |
A. |
Basis: The classification of soil structure is based on size shape and stability of soil aggregates. The soil aggregate may be of following forms |
B. |
Major shape: Spheroidal, plate like, bloke like, prism like |
C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option C
Explanation:
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6. |
The development of soil structure from single grained or massive states conditions: |
A. |
Single grained: Where each soil particles function as an individual e.g. Sandy soil |
B. |
Massive: Clay fills the spaces and pores so that the soil becomes dense and forms clods |
C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option C
Explanation:
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7. |
The functions of soil structure are: |
A. |
Key to fertility of soil |
B. |
Portant factor in soil erosion |
C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option C
Explanation:
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8. |
The major soil texture includes: |
A. |
Course textured soil (more sand particles) |
B. |
Medium textured soil (qual proportion of very fine sand, silt and clay) |
C. |
Fine textured soil (silt and clay) |
D. |
All of the above |
Answer: Option D
Explanation:
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9. |
Properties of 'Sand Particles' are: |
A. |
Composed of mineral quartz |
B. |
Larger is size |
C. |
Have large pores due to which they |
D. |
Do not retain water/nutrients |
E. |
All of the above |
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Answer: Option E
Explanation:
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10. |
Properties of silts are: |
A. |
Intermediate in size between sand and clay |
B. |
Powdery feeling |
C. |
More plasticity than sand |
D. |
All of the above |
Answer: Option D
Explanation:
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