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Subjects

Geography

Weathering: physical, chemical, and biological

In Class 11 Geography, this topic from the chapter “Geomorphic Processes” explains weathering as the breakdown and alteration of rocks at or near Earth’s surface without transporting the material. Students learn how physical weathering acts through temperature changes, pressure release, and frost; how chemical weathering involves processes such as solution, carbonation, oxidation, hydration, and hydrolysis; and how plants, animals, and microorganisms drive biological weathering. The topic also connects climate, rock type, relief, and time with soil formation and landscape development.

Medium · Level 4 · 25 questions

Practice questions

01Onion-like peeling on granite surface may be related to which process?

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02Carbonation is more associated with what type of water?

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03If an area has heavy rainfall and high temperature which weathering is likely to be greater?

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04Root pressure is placed under which type of weathering?

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05Which statement best explains the actual nature of weathering?

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06How can bacteria and lichens chemically affect rocks?

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07How does climate control the rate of weathering?

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08Why can differential weathering occur in a rock with hard and weak minerals?

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09Which example shows the combined effect of biological and physical weathering?

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10In which area is chemical weathering more likely to be slow?

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11Small particles produced by physical weathering become more vulnerable to what?

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12Which option is a correct example of biological weathering?

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13Why is weathering considered an exogenic process rather than an endogenic process?

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14Which factor is most likely to speed up weathering?

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15Under which condition can chemical change become faster after mechanical breakup?

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16Weakening of minerals by organic acids is linked with which type of weathering?

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17Which statement correctly states a necessary condition for frost action?

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18Why can minerals remain nearly the same after physical weathering?

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19Why can weathering be called an initial stage of landform development?

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20What effect can temperature and frost together have on rocks in high altitude areas?

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21In which condition can physical weathering be more dominant than chemical weathering?

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22Loose material formed from weathered rock can become the base for which later process?

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23Expansion and breaking of upper rock layers after pressure release is related to what?

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24How can acid rain affect weathering of rocks?

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25Which condition is generally more helpful for deep soil formation?

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