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  9. Q36

OPSC OCS 2022 · Question 36 of 98

Match List-I and List-II and select the correct answer using the code given below: List-I List-II a. Faulting 1. Yardangs b. Wave erosion 2. Kettle Hole c. Ice Scouring 3. Escarpment d. Wind Erosion 4. Stacks Codes: a b c d

General Studies

  1. A3 4 1 2
  2. B4 3 1 2
  3. C3 4 2 1Correct
  4. D4 3 2 1

Answer: C. 3 4 2 1

Explanation

Yardang, large area of soft, poorly consolidated rock and bedrock surfaces that have been extensively grooved, fluted, and pitted by wind erosion. The rock is eroded into alternating ridges and furrows essentially parallel to the dominant wind direction. A kettle is a depression or hole in an outwash plain formed by retreating glaciers or draining floodwaters. The kettles are formed as a result of blocks of dead ice left behind by retreating glaciers, which become surrounded by sediment deposited by meltwater streams as there is increased friction. An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations. The terms scarp and scarp face are often used interchangeably with escarpment A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion.

Source: OPSC OCS (2022) Preliminary GS Paper-I; answers per Apti Plus Academy compilation (to be verified against official OPSC key)

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