In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed ________ of the column diameter?

Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is________?

For high conversion in a highly exothermic solid catalysed reaction, use a ________ bed reactor?

Work done in case of free expansion is________?

The diffusivity D. in a binary gas mixture is related to the temperature (T) as________?

Which is an acidic refractory?