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Subjects

Geography

Soil formation processes

In this Class 11 Geography topic from Geomorphic Processes, students learn how soil develops through the weathering of rocks and the gradual interaction of parent material, climate, organisms, relief and time. The topic explains key processes such as the addition and loss of materials, transformation of minerals and the movement of clay and other substances within the soil profile. It also helps students understand soil horizons, profile development and the influence of erosion and drainage on soil formation.

Medium · Level 2 · 25 questions

Practice questions

01Which is the correct difference between residual soil and transported soil?

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02What can cause diversity of particles in alluvial soil?

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03What can be a general feature of soil formed from loess deposits?

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04Why is glacial till called unsorted?

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05Why is nitrogen fixation important in soil?

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06What effect is possible when organic matter is low in soil?

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07What negative effect can removal of vegetation cover have on soil formation?

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08What happens to chemical weathering when high temperature and moisture occur together?

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09How does freeze thaw affect soil formation in cold regions?

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10On which rock can carbonation be especially effective?

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11How is oxidation related to soil color and mineral change?

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12What causes weakening of minerals during hydration?

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13Why is the balance of water and air in soil necessary?

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14Which is the best indicator of soil maturity?

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15If horizons are not clear in soil which conclusion is more appropriate?

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16Why can alluvial deposits be considered parent material in soil formation?

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17Why can water holding capacity increase when soil has more humus?

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18What type of contribution do roots make in soil weathering?

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19On what principle does contour ploughing work on steep fields?

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20How does terrace farming indirectly protect soil formation in hilly areas?

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21What effect can mulching have on soil moisture and temperature?

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22Why is balance between soil formation and soil erosion important?

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23Why can deforestation increase both leaching and erosion?

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24How can deep rooted vegetation help soil formation?

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25Why are microorganisms necessary for nutrient cycling in soil?

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