Question

Arrange the following soil particles in descending order of their diameter:
(A) Clay
(B) Silt
(C) Fine sand
(D) Coarse sand
Choose the correct answer from the options given below:

• A. (A), (B), (C), (D)
• B. (A), (C), (B), (D)
• C. (D), (C), (B), (A)
• D. (B), (A), (D), (C)

Answer 1

The Correct Option is C

To arrange the given soil particles in descending order of their diameter, we need to understand the typical size range for each type of soil particle:

• Clay: Particles are the smallest, generally less than 0.002 mm in diameter.
• Silt: Larger than clay, with particle diameters ranging from 0.002 mm to 0.05 mm.
• Fine Sand: Particles range from 0.05 mm to 0.2 mm in diameter.
• Coarse Sand: The largest particles, with diameters typically ranging from 0.2 mm to 2 mm.

Based on these diameter ranges, the particles can be arranged in descending order of size as follows:
(D) Coarse sand
(C) Fine sand
(B) Silt
(A) Clay

The correct order from the given options is: (D), (C), (B), (A)

Answer 2

The correct answer is (3) (D), (C), (B), (A).

Soil particles vary in size, and their classification is based on their diameter. The general order from largest to smallest particle size is as follows:

Coarse sand (D): Coarse sand has the largest particle size among the options.

Fine sand (C): Fine sand has smaller particles than coarse sand, but still larger than silt and clay.

Silt (B): Silt particles are smaller than sand particles, but larger than clay particles.

Clay (A): Clay has the smallest particle size, and it is the finest soil particle.

Thus, the correct sequence of soil particles in descending order of their diameter is (D) Coarse sand, (C) Fine sand, (B) Silt, (A) Clay.

Therefore, the correct answer is (3) (D), (C), (B), (A).