Daily Current Affairs Quiz: November 05, 2025

Answer: D [None]
Explanation:

Statement 1 is incorrect: A volcanic crater is not formed by the inward collapse of a volcano; instead, it is typically formed by volcanic activity, such as the explosion or ejection of magma and gases during an eruption. The explosion creates a depression at the summit of the volcano.

Statement 2 is incorrect: Volcanic craters aren’t always found at the top of volcanoes. They can also appear on the sides of volcanoes.

Statement 3 is incorrect: The size of a volcanic crater isn’t just determined by how thick the magma is. The amount of magma that erupts and how explosive the eruption is also play a big role.

Answer: A [1, 2 and 3 only]
Explanation:

Statement 1 is correct: Weathering refers to the disintegration and decomposition of rocks in situ (at their original place) due to physical, chemical, or biological processes. Unlike erosion, it does not involve transportation of the weathered material.

Statement 2 is correct: Erosion involves both wearing down and transportation of weathered material by natural agents like rivers, glaciers, winds, or waves. It reshapes the land surface over time, contributing to geomorphological evolution.

Statement 3 is correct: Deposition occurs when transporting agents lose energy, dropping the carried sediments. This leads to formation of features like deltas, floodplains, sand dunes, and moraines.

Statement 4 is incorrect: Geomorphological processes are driven by both endogenic (internal) forces such as volcanism, tectonics, and diastrophism, and exogenic (external) forces like weathering, erosion, and deposition. Hence, saying “exclusively by endogenic forces” is wrong.

Answer: D [All of the above]
Explanation:

Statement 1 is correct: Epeirogenic movements involve vertical uplift or subsidence of large continental blocks, creating features like plateaus (uplift) and basins (subsidence).

Statement 2 is correct: Orogenic movements are responsible for mountain building through processes like folding, faulting, and volcanic activity, occurring in relatively localized zones.

Statement 3 is correct: Epeirogenic movements are slow, broad-scale processes, while orogenic movements are comparatively faster and concentrated along convergent plate boundaries or other zones of crustal compression.

Statement 4 is correct: The Himalayas are a prime example of orogenic movements, formed by the collision of the Indian and Eurasian plates. The Deccan Plateau, on the other hand, is a result of epeirogenic uplift.

Answer: B [Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I]
Explanation:

Statement 1 is correct: Piedmonttreppen are step-like formations created by the erosional and depositional activity of rivers flowing from mountains onto plains.

Statement 2 is correct: Peneplains are extensive, nearly flat land surfaces resulting from prolonged erosion, often considered the final stage of the fluvial erosion cycle.

While both statements relate to fluvial processes, they describe distinct landform features. The formation of Piedmonttreppen is localized at the base of mountains, while peneplains represent a broader, regional-scale outcome of erosion. There is no direct causal relationship between the formation of Piedmonttreppen and the development of a peneplain. Therefore, both statements are correct but independent of each other.

Answer: B [Only two]
Explanation:

Statement 1 is incorrect: While rainfall is a significant factor in karst formation, the key element is the presence of soluble rock (like limestone) that can be easily dissolved by slightly acidic water. Karst landscapes can be found in a variety of climates, not just those with high temperatures.

Statement 2 is correct: Limestone, due to its solubility in slightly acidic water, is the most common rock type associated with karst landscapes. This solubility leads to the characteristic landforms of karst areas.

Statement 3 is correct: Sinkholes, disappearing streams, and underground drainage systems are hallmark features of karst landscapes, formed by the dissolution of soluble rocks and the subsequent subsurface drainage.