Question

Match the columns of size with soil particles

	Column 1 (size)		Column 2 (soil particle)
a.	0.2 - 2.00 mm	(i)	Silt
b.	Less than 0.002 mm	(ii)	Clay
c.	0.02 - 0.2 mm	(iii)	Coarse sand particles
d.	0.02 - 0.02 mm	(iv)	Fine sand particles

• A. a- iv, b- i, c- iii, d- ii
• B. a- iii, b- ii, c- iv, d- i
• C. a- ii, b- iii, c- iv, d- i
• D. None of the above

Answer 1

The correct option is B a- iii, b- ii, c- iv, d- i

Soil texture refers to the relative proportion of particles or it is the relative percentage by weight of the three soil separates i.e., sand, silt and clay or the size of soil particles. According to the International system,

Clay< 0.002 mm

Silt 0.002 - 0.02 mm

Fine sand 0.02 - 0.2 mm

Coarse sand 0.2 - 2 mm

The proportion of each size group in a given soil (the texture) can not be easily altered and it is considered as a basic property of a soil.

Therefore, the correct answer is option B.