SSC CGL 2025 PYQ — Question 42

The correct answer is option 3 i.e. It is an unsorted mix of materials deposited directly by ice.

Glacial till is a type of sediment that is deposited directly by glacial ice without the involvement of flowing water. Because the ice carries and drops materials of many sizes together, till contains a mixture of clay, silt, sand, gravel, and large rocks (boulders). These particles are unsorted and unstratified, meaning they are not arranged in layers and do not have uniform grain sizes. In contrast, water-laid glacial sediments (also called glaciofluvial deposits) are transported and deposited by meltwater streams flowing from glaciers. Flowing water sorts the particles by size and weight, creating layered or stratified deposits with more rounded grains. Therefore, the key feature that distinguishes glacial till is its poor sorting and direct deposition by ice.