1.

The co-efficient of permeability of fine sand is ____________

A. 1.0 and greater
B. 1 10<sup>-6</sup> and smaller
C. 1 10<sup>-2</sup> to 5 10<sup>-3</sup>
D. 5 10<sup>-2</sup> to 1 10<sup>-3</sup>
Answer» E.


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