UPSC Civil Service Exam Questions

Q1: Consider the following factors pertaining to flow through soil:
1. Hydraulic gradient
2. Grain size
3. Void ratio
4. Cross-sectional area of the sample.
Of these, the factors affecting permeability include

A 1 and 4

B 2 and 3

C 1, 2 and 3

D 2, 3 and 4

ANS:B - 2 and 3

It is regarding factors affecting the permeability of the soil and not the flow through the soil. Therefore permeability of soil depends on soil characteristics like grain size and void ratio.



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