When the soil is in loosest form, density index is zero and its relative compaction Rc is ______
a) 40%
b) 60%
c) 80%
d) 100%
Answer: c
Explanation: The relationship between the relative compaction Rc and density index ID is given by,
Rc=80+0.2ID
When ID=0,
Rc=80+0.2*0
Rc=80%.
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