The void ratio and specific gravity of a soil are 0.65 and

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The void ratio and specific gravity of a soil are 0.65 and 2.72 respectively. The degree of saturation (in percent) corresponding to water content of 20% is

1. 65.3
2. 20.9
3. 83.7
4. 54.4

Correct Option: C

e =	wG
	S_r

⇒ 0.65 =	0.2 × 2.72
	S_r

∴ S_r = 0.837 = 83.7%