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UPSC CDS Soil & Vegetation — practice questions — page 8

Explore 227 free Soil & Vegetation questions in UPSC CDS Geography. Open each question or exercise to read its content, reference answers and available explanation.

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Soil & Vegetation questions and exercises with answers

Showing questions 211–227 of 227.

If 200 mL of water takes 20 minutes to percolate through soil, the percolation rate is:Read the answer and worked solution →Air above farmland shimmers on a hot day because:Read the answer and worked solution →Soils rich in clay and organic matter with good water retention are ideal for:Read the answer and worked solution →Lentils and other pulses need which soil that drains water easily?Read the answer and worked solution →Cotton grows best in loam or:Read the answer and worked solution →Potters of Sohagpur mix burnt horse dung into black soil to:Read the answer and worked solution →Sohagpur, famous for its surahis and matkas, is in:Read the answer and worked solution →Removal of land surface by water, wind or ice is:Read the answer and worked solution →Soil erosion is most severe in areas with little or no:Read the answer and worked solution →Catch the soil profile layersRead the answer and worked solution →Pop the soil shapersRead the answer and worked solution →Run the soil typesRead the answer and worked solution →Slice the soil wordsRead the answer and worked solution →Sandy or clayeyRead the answer and worked solution →Sort the soil horizonsRead the answer and worked solution →Type the numberRead the answer and worked solution →Soil bingoRead the answer and worked solution →

Worked practice questions

If 200 mL of water takes 20 minutes to percolate through soil, the percolation rate is:

  1. 20 mL per minute
  2. 200 mL per minute
  3. 2 mL per minute
  4. 10 mL per minute
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Correct answer: D. 10 mL per minute

1. Rate equals water amount divided by time. 2. 200 divided by 20 is 10 mL per minute. 3. Sandy soil percolates fastest. _Source: syllabus Science, Chapter 9, Soil._

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Air above farmland shimmers on a hot day because:

  1. Soil vapour reflects sunlight
  2. Sand grains glow in the heat
  3. Crops release extra oxygen
  4. Roots warm the soil surface
Show answer and solution

Correct answer: A. Soil vapour reflects sunlight

1. Soil holds moisture. 2. Water vapour rising from soil reflects sunlight. 3. Heating soil in a tube shows the droplets. _Source: syllabus Science, Chapter 9, Soil._

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Soils rich in clay and organic matter with good water retention are ideal for:

  1. Millets
  2. Paddy
  3. Cotton
  4. Lentils
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Correct answer: B. Paddy

1. Paddy needs standing water. 2. Clay-rich water-retaining soil suits it. 3. Cotton prefers sandy-loam. _Source: syllabus Science, Chapter 9, Soil._

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