SSC Selection Post 2022 PYQ — Question 29

The correct answer is Option 4 i.e. Geological weathering.

Geological weathering is the process where rocks, soils, and minerals are broken down or dissolved by natural elements like water, wind, ice, and biological activity. While weathering is the initial breakdown, erosion then involves the transportation of these weathered particles.

For instance, physical weathering (like frost wedging, where freezing water expands in cracks) or chemical weathering (like acid rain dissolving rocks) disintegrates solid rock into smaller fragments and fine soil. Once loosened, these particles become susceptible to erosional forces such as rainfall, wind, or flowing water, which carry them away, leading to the slow, continuous erosion of soil.