Correct Answer - Option 3 : 7.8%
Concept:
Water content formula is given by:
w = Ww/Ws
where,
w = Water content
Ww = Weight of water
Ws = Weight of solids
Calculation:
Given data:
Weight of water (Ww) = 2.16 gm
Weight of dry soil or weight of solid (Ws) = 27.63 gm
So, Water content, w = \(2.16 \over 27.63\) = 0.0781
Water content (w) = 7.81%