BPSC CCE Prelims
Landform Development Previous Year Questions (PYQs)
Practice solved questions for Landform Development with detailed step-by-step solutions, key insights, and trend analysis for BPSC CCE PRELIMS.
Solved Previous Year Questions
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Dalmetian Coast is
Detailed Explanation:
The Dalmatian Coast is a classic example of a submergent coastline formed in karst topography along the eastern Adriatic Sea (mainly Croatia).
Parallel limestone ridges and valleys were created by erosion of soluble limestone; when sea levels rose, valleys were submerged, forming elongated islands and inlets parallel to the shore—characteristic of karst foot-hill submergence.
Which of the following statements are concerned with eskers and drumlins?
- Eskers are ridges of crudely bedded gravels and sands.
- Drumlins are constituted mostly of boulder and clay.
- Basket of eggs topography is the characteristic of terrains with eskers
- While eskers are built by glacier streams, drumlins result from glacier action.
Choose the correct answer from the options given below.
Detailed Explanation:
Eskers are sinuous ridges formed by glacial meltwater streams, composed of crudely bedded gravels and sands (Statement 1 correct). Drumlins are streamlined hills formed by direct glacial action, consisting mainly of boulder clay/till (Statement 2 correct). Statement 4 correctly distinguishes their formation: eskers by subglacial streams, drumlins by moving ice.
Statement 3 is incorrect: "Basket of eggs topography" characterizes terrain with drumlins, not eskers. Drumlin fields resemble baskets of eggs when viewed from above due to their oval, clustered appearance.
Therefore, statements 1, 2, and 4 are correct, making Option 2 the correct answer.
Who among the following postulated the concept of geographical cycle of erosion?
Detailed Explanation:
William Morris Davis (W. M. Davis) postulated the geographical cycle of erosion in 1899, also known as the cycle of erosion. This model describes landform evolution through sequential stages: youth, maturity, and old age.
S. W. Wooldridge contributed to geomorphology but did not develop this cycle; Kober worked on mountain building theories; A. Holmes is known for geochronology and mantle convection—none proposed the erosion cycle.
Therefore, W. M. Davis is the correct answer, making Option 1 correct.
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