Arrange the soil particles in the ascending order of its diameter (mm)

(A) silt

(B) clay

(C) fine sand

(D) coarse sand

Choose the correct answer from the options given below:

Correct option is A

Explanation of the Correct Option (a): (B), (A), (C), (D)
· Soil particles are classified based on particle diameter.
· Ascending order means from smallest to largest size.
Correct size sequence:
· Clay → smallest particle (< 0.002 mm)
· Silt → intermediate size (0.002–0.05 mm)
· Fine sand → larger particles (0.05–0.2 mm)
· Coarse sand → largest particles (0.2–2.0 mm)
· Therefore, the correct ascending order is:
· Clay → Silt → Fine sand → Coarse sand
· Which corresponds to (B), (A), (C), (D)
Explanation of Other Options
Option (b): (A), (C), (D), (B)
· Incorrect because:
· Clay (smallest) is wrongly placed at the end.
Option (c): (C), (D), (A), (B)
· Incorrect because:
· Sand particles are larger and cannot precede silt and clay.
Option (d): (D), (A), (B), (C)
· Incorrect because:
· Coarse sand is the largest particle and should be last, not first
Key Points Related to the Question
· Particle size classification (USDA):
· Clay: < 0.002 mm
· Silt: 0.002–0.05 mm
· Sand: 0.05–2.0 mm
· Particle size influences:
· Water holding capacity
· Aeration
· Nutrient availability