Discussion
Which of the following represents an ascending order as per the size of particles ?
Answer: B
The ascending order is clay, silt, sand, gravel, rock.
Soil and rock particles are classified by size. Clay particles are the finest (less than about 0.002 mm), then silt, then sand (up to about 2 mm), then gravel (pebble-sized pieces), and finally rock, the solid mass from which these particles are broken down by weathering.
The other options misplace clay and silt or run the order backwards (from rock to clay is descending order).
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