The Soil System: Classification, Natural Vegetation and Mineral Resources in India- MCQs with answers - Part III

The Soil System: Classification, Natural Vegetation and Mineral Resources in India- MCQs with answers - Part III

1. Consider the following statements. Identify the right ones.

I. The Black soils are generally clayey, deep and impermeable.

II. They are rich in phosphorus, nitrogen and organic matter.

a. I only
b. II only
c. Both
d. None

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2. Consider the following statements. Identify the right ones.

I. The Laterite soils develop in areas with high temperature and high rainfall.

II. It is not suitable for cultivation.

a. I only
b. II only
c. Both
d. None

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3. Consider the following statements. Identify the right ones.

I. Saline soils are infertile because of the presence of sodium, potassium and magnesium in a larger proportion.

II. They have more salts, largely because of dry climate and poor drainage.

a. I only
b. II only
c. Both
d. None

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4. In the areas of intensive cultivation with excessive use of irrigation, especially in areas of green revolution, the fertile alluvial soils are becoming saline. What should be added in the soil to solve the problem of salinity?

a. Calcium
b. Nitrogen
c. Phosphorus
d. Gypsum

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5. Consider the following statements. Identify the right ones.

I. Soil degradation can be defined as the decline in soil fertility, when the nutritional status declines and depth of the soil goes down due to erosion and misuse.

II. The destruction of the soil cover is described as soil erosion.

a. I only
b. II only
c. Both
d. None

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6. What are the two powerful agents of soil erosion?

I. Water
II. Wind
III. Human Activities
IV. Disasters

a. I and II only
b. III and IV only
c. II and IV only
d. III only

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7. Consider the following statements about water erosion. Identify the right ones.

I. Water erosion is significant in the regions of heavy rainfall and steep slopes.

II. It takes place mainly in the form of sheet and gully erosion.

III. Sheet erosion takes place on level lands after a heavy
shower.

IV. Gully erosion is common on steep slopes.

a. I,II and III only
b. II and IV only
c. III and IV only
d. All

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8. A region with a large number of deep gullies or ravines is called as

a. Level Land
b. Badlands Topography
c. Saline Land
d. Arid Land

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9. Consider the following statements. Identify the right ones.

Assertion (A): Soil erosion is a serious problem for Indian Agriculture.

Reason (R): They accentuate the problems of floods in the rivers.

Select the correct answer from the codes given below:

a. Both A and R is true but R is not the correct explanation of A.
b. Both A and R is true and R is the correct explanation of A.
c. A is true, but R is false.
d. A is false, but R is true.

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10. Consider the following statements. Identify the right ones.

I. Deforestation is one of the major causes of soil erosion.

II. Plants and Trees keep soils bound in locks of roots which helps in preventing soil erosion.

a. I only
b. II only
c. Both
d. None

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