Environmental Studies ยท Geography

Soil Science

1,537 Questions

Soil Science examines the formation, classification, and properties of soil as a critical natural resource. This hub offers practice questions covering soil horizons, soil types like laterite and black soil, and regional soil characteristics. The content is highly useful for agriculture exams and civil services preparation.

Soil typesSoil horizonsSoil formation factorsAgricultural soil requirementsIndian soilsForest and mountain soils

Soil Science Questions

Multiple choice

Which soil type is known for its high fertility and is suitable for cultivation of a variety of crops?

  1. Alluvial soils

  2. Black soils

  3. Red soils

  4. Laterite soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Alluvial soils are known for their high fertility and are suitable for cultivation of a variety of crops. They are formed by the deposition of sediments by rivers and are typically rich in nutrients.

Multiple choice

What is the primary factor responsible for the formation of black soils?

  1. High organic matter content

  2. High clay content

  3. High iron content

  4. High calcium content
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A Correct answer
Explanation

The primary factor responsible for the formation of black soils is the high organic matter content. This organic matter is derived from the decomposition of plants and animals and contributes to the dark color and fertile nature of these soils.

Multiple choice

Which soil type is commonly associated with the Deccan Plateau region of India?

  1. Black soils

  2. Red soils

  3. Laterite soils

  4. Desert soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Black soils are commonly associated with the Deccan Plateau region of India. They are formed from the weathering of lava and are characterized by their dark color and high clay content.

Multiple choice

Which soil type is known for its reddish-brown color and is often found in semi-arid regions?

  1. Red soils

  2. Black soils

  3. Laterite soils

  4. Desert soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Red soils are known for their reddish-brown color and are often found in semi-arid regions. They are formed from the weathering of rocks and are characterized by their high iron content.

Multiple choice

Which soil type is characterized by its high acidity and is commonly found in humid tropical regions?

  1. Laterite soils

  2. Black soils

  3. Red soils

  4. Desert soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Laterite soils are characterized by their high acidity and are commonly found in humid tropical regions. They are formed from the intense weathering of rocks and are typically low in nutrients.

Multiple choice

Which soil type is known for its high calcium carbonate content and is often found in arid and semi-arid regions?

  1. Calcareous soils

  2. Black soils

  3. Red soils

  4. Laterite soils
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A Correct answer
Explanation

Calcareous soils are known for their high calcium carbonate content and are often found in arid and semi-arid regions. They are formed from the accumulation of calcium carbonate in the soil and are typically alkaline in nature.

Multiple choice

Which soil type is characterized by its high salinity and is often found in coastal areas and inland saline areas?

  1. Saline soils

  2. Black soils

  3. Red soils

  4. Laterite soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Saline soils are characterized by their high salinity and are often found in coastal areas and inland saline areas. They are formed from the accumulation of salts in the soil and are typically unsuitable for agriculture.

Multiple choice

Which soil type is known for its high clay content and is often found in river deltas and floodplains?

  1. Clayey soils

  2. Black soils

  3. Red soils

  4. Laterite soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Clayey soils are known for their high clay content and are often found in river deltas and floodplains. They are formed from the deposition of fine-grained sediments and are typically heavy and sticky in texture.

Multiple choice

Which soil type is characterized by its high organic matter content and is often found in marshy areas and wetlands?

  1. Peaty soils

  2. Black soils

  3. Red soils

  4. Laterite soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Peaty soils are characterized by their high organic matter content and are often found in marshy areas and wetlands. They are formed from the accumulation of partially decayed plant material and are typically dark in color and spongy in texture.

Multiple choice

Which soil type is known for its high nutrient content and is often found in volcanic regions?

  1. Volcanic soils

  2. Black soils

  3. Red soils

  4. Laterite soils
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A Correct answer
Explanation

Volcanic soils are known for their high nutrient content and are often found in volcanic regions. They are formed from the weathering of volcanic ash and are typically dark in color and fertile.

Multiple choice

When was the first soil science department established in India?

  1. 1905

  2. 1910

  3. 1915

  4. 1920
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A Correct answer
Explanation

The first soil science department in India was established at the Agricultural Research Institute, Pusa, in 1905.

Multiple choice

Which soil type is most commonly found in the Indo-Gangetic Plains?

  1. Alluvial soils

  2. Black soils

  3. Red soils

  4. Laterite soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Alluvial soils are the most common soil type in the Indo-Gangetic Plains due to the deposition of sediments by rivers.

Multiple choice

Which soil type is known for its black color and high clay content?

  1. Black soils

  2. Red soils

  3. Laterite soils

  4. Alluvial soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Black soils are known for their black color and high clay content.

Multiple choice

What is the main component of laterite soils?

  1. Iron oxides

  2. Aluminum oxides

  3. Silica

  4. Calcium carbonate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Laterite soils are primarily composed of iron oxides.

Multiple choice

Which soil type is commonly found in arid and semi-arid regions?

  1. Desert soils

  2. Black soils

  3. Red soils

  4. Laterite soils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Desert soils are commonly found in arid and semi-arid regions.