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Q70 (CDS-II/2010) Geography › World Physical Geography › Weathering and erosion Answer Verified

Which among the following pairs are correct ? 1. Cirque and Col : Glacial topography 2. Barkhans and Yardangs : Desert topography 3. Eddies and potholes : Fluvial topography Select the correct answer using the code given below:

Result
Your answer: —  ·  Correct: A
Explanation

All three pairs are correctly matched. Pair 1 is correct as Cirques are bowl-shaped depressions at the head of glacial valleys [c1][t6], and a Col is a spillway or pass formed when glacial action erodes through an arête [t2][t6]. Pair 2 is correct; Barkhans (or Barchans) are crescent-shaped sand dunes, and Yardangs are streamlined wind-eroded rock ridges, both characteristic of desert (aeolian) topography. Pair 3 is correct as potholes are cylindrical depressions in riverbeds formed by the abrasive action of stones whirled by eddies (turbulent water currents), which are fundamental features of fluvial (river) topography. These landforms represent the erosional and depositional processes of ice, wind, and running water respectively.

Sources

  1. [1] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 6: Landforms and their Evolution > Cirque > p. 54
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