Fanning friction factor equation applies to the ________ fluid flow?

Shaft furnaces are used for________?

Which of the following is a dimensionless parameter?

The flow of a liquid through tapering pipe at a constant rate is an example of ________ flow?

For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately ________ microns?

Which of the following is not fixed by the process requirements, in the design of absorbers?