**75) Find the value of relative compaction (Rc) when the soil is in its loosest form & the density index is equal zero.**

- a) 82%
- b) 84%
- c) 80%
- d) 86%

Komal Bhandakkar Answered question January 5, 2021

**Answer: c) 80%**

Explanation:The relationship between the relative compaction & density index is given below;

Rc = 80 + 0.2 (ID)

Where,

• Rc = Relative Compaction

• ID = Density IndexWhen the value of density index is zero then the relative compaction will become,

Rc = 80 + (0.2 x 0)

Rc = 80 %

Hence, the value of relative compaction is 80%.

Komal Bhandakkar Edited answer January 5, 2021