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

What is the role of climate in soil formation?

  1. It determines the amount of rainfall and temperature.

  2. It affects the rate of weathering.

  3. It influences the type of vegetation that grows.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Climate plays a role in soil formation by determining the amount of rainfall and temperature, affecting the rate of weathering, and influencing the type of vegetation that grows.

Multiple choice

What is the difference between soil and regolith?

  1. Soil contains organic matter.

  2. Soil has a more developed structure.

  3. Soil supports plant growth.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil differs from regolith in that it contains organic matter, has a more developed structure, and supports plant growth.

Multiple choice

What is the A horizon of a soil profile?

  1. The topsoil

  2. The subsoil

  3. The parent material

  4. The bedrock
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The A horizon of a soil profile is the topsoil. It is the uppermost layer of the soil and is typically dark in color due to the presence of organic matter.

Multiple choice

What is the B horizon of a soil profile?

  1. The topsoil

  2. The subsoil

  3. The parent material

  4. The bedrock
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The B horizon of a soil profile is the subsoil. It is the layer of soil that lies beneath the topsoil and is typically lighter in color due to the absence of organic matter.

Multiple choice

What is the C horizon of a soil profile?

  1. The topsoil

  2. The subsoil

  3. The parent material

  4. The bedrock
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The C horizon of a soil profile is the parent material. It is the layer of soil that lies beneath the subsoil and is composed of the original material from which the soil was formed.

Multiple choice

How can individuals contribute to preventing soil contamination?

  1. Properly disposing of household chemicals

  2. Using organic gardening practices

  3. Recycling and composting

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Individuals can contribute to preventing soil contamination by properly disposing of household chemicals, using organic gardening practices, and recycling and composting. These actions help to reduce the amount of harmful substances released into the environment and promote sustainable land use practices.

Multiple choice

Which of the following soil types is most susceptible to wind erosion?

  1. Sandy soil

  2. Clayey soil

  3. Loamy soil

  4. Silty soil
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sandy soil is most susceptible to wind erosion because it is composed of loose, fine particles that are easily carried away by the wind.