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 clay content and is commonly found in the Deccan Plateau?

  1. Alluvial Soils

  2. Black Soils

  3. Red Soils

  4. Desert Soils
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Black Soils, also known as Regur Soils, are characterized by their high clay content and are predominantly found in the Deccan Plateau.

Multiple choice

What is the predominant soil type in the Thar Desert region of India?

  1. Alluvial Soils

  2. Black Soils

  3. Red Soils

  4. Desert Soils
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Desert Soils, characterized by their arid and sandy texture, are the predominant soil type in the Thar Desert region of India.

Multiple choice

Which soil type is commonly found in the coastal regions of India?

  1. Alluvial Soils

  2. Black Soils

  3. Red Soils

  4. Sandy Soils
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sandy Soils are commonly found in the coastal regions of India due to the deposition of sediments by waves and currents.

Multiple choice

Which soil type is known for its high organic matter content and is commonly found in the Himalayan region?

  1. Alluvial Soils

  2. Black Soils

  3. Red Soils

  4. Mountain Soils
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mountain Soils, characterized by their high organic matter content and steep slopes, are commonly found in the Himalayan region.

Multiple choice

Which type of foundation is commonly used for structures built on soft or loose soils?

  1. Spread footings

  2. Pile foundations

  3. Mat foundations

  4. Raft foundations
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pile foundations are commonly used for structures built on soft or loose soils because they transfer the load of the structure to deeper, more stable soil layers. Piles are long, slender structural elements that are driven into the ground to provide support for the foundation.

Multiple choice

Which soil type is most susceptible to liquefaction during an earthquake?

  1. Clay

  2. Silt

  3. Sand

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

Sand is the soil type most susceptible to liquefaction during an earthquake. Liquefaction occurs when loose, saturated sand loses its strength and behaves like a liquid due to the shaking caused by an earthquake.

Multiple choice

Which of the following is not a type of soil sample?

  1. Grab sample

  2. Split-spoon sample

  3. Tube sample

  4. Core sample
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Grab samples are not a type of soil sample because they are not collected using a specific sampling method. They are simply collected by hand or with a shovel.

Multiple choice

Which of the following is not a type of drainage system?

  1. French drain

  2. Perforated pipe drain

  3. Blanket drain

  4. Gabion drain
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gabion drains are not a type of drainage system. They are a type of retaining wall that is made of gabions, which are wire baskets filled with rocks.

Multiple choice

Which of the following is a common type of physical soil remediation technique?

  1. Soil Washing

  2. Thermal Desorption

  3. Solidification/Stabilization

  4. Electrokinetic Remediation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Soil washing is a physical technique that involves separating contaminants from soil particles using water or a solvent, allowing for the recovery of clean soil.

Multiple choice

Which of the following is a common type of chemical soil remediation technique?

  1. In-situ Chemical Oxidation

  2. In-situ Chemical Reduction

  3. Soil Flushing

  4. Electrokinetic Remediation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In-situ Chemical Oxidation involves injecting chemical oxidants into the soil to convert contaminants into less harmful or immobile forms.

Multiple choice

Which of the following is the most widespread soil type in India?

  1. Alluvial Soil

  2. Black Soil

  3. Red Soil

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

Alluvial soil is the most widespread soil type in India, covering about 43% of the total land area. It is formed by the deposition of sediments by rivers and is found in the river basins and floodplains of major rivers like the Ganga, Brahmaputra, Indus, and Godavari.

Multiple choice

Black soil is predominantly found in which region of India?

  1. Deccan Plateau

  2. Gangetic Plain

  3. Himalayan Region

  4. Coastal Plains
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Black soil is predominantly found in the Deccan Plateau region of India, which includes states like Maharashtra, Karnataka, Andhra Pradesh, and Telangana. It is also known as regur soil and is characterized by its dark color, high clay content, and expansive nature.

Multiple choice

Which soil type is commonly associated with the cultivation of cotton in India?

  1. Alluvial Soil

  2. Black Soil

  3. Red Soil

  4. Laterite Soil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Black soil is commonly associated with the cultivation of cotton in India. It is known for its high moisture retention capacity, making it suitable for cotton cultivation. Major cotton-growing regions in India, such as Maharashtra, Gujarat, and parts of Karnataka, have black soil as the dominant soil type.

Multiple choice

Red soil is primarily found in which part of India?

  1. Northern India

  2. Southern India

  3. Eastern India

  4. Western India
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Red soil is primarily found in Southern India, covering states like Andhra Pradesh, Telangana, Karnataka, Tamil Nadu, and parts of Maharashtra. It is formed from the weathering of ancient crystalline rocks and is characterized by its reddish color and low fertility.

Multiple choice

Which soil type is known for its lateritic characteristics and is commonly found in high rainfall areas?

  1. Alluvial Soil

  2. Black Soil

  3. Red Soil

  4. Laterite Soil
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Laterite soil is known for its lateritic characteristics and is commonly found in high rainfall areas. It is formed by the intense leaching of soluble constituents from the soil, leaving behind a concentration of iron and aluminum oxides. Laterite soil is found in parts of Kerala, Karnataka, and the northeastern states of India.