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UPSC Civil Service Exam Questions - Engineering

Q1:

Given for a soil sample :
Degree of saturation = 90%
Specific gravity of soil grains = 2.70
Void ratio = 0.30
The water content of the sample is

A 10%

B 13.5%

C 22.5%

D 35%

ANS:A - 10%

S=0.90,G=2.70,e=0.30.

WG=eS,
W * 2.70 = 0.30*0.90,
W =0.30*0.90/2.70,
W = 10%.