$29.$ True$/$False: Scale$-$up of fluidized bed reactors does not impact their hydrodynamics and operational efficiency.

$30.$ True$/$False: In trickle bed reactors, the liquid phase always flows at a higher velocity than the gas phase.

$31.$ True$/$False: The presence of solid particles in gas$-$solid liquid flows does not complicate the flow regime identification process.

$32.$ True$/$False: The drift flux model can accurately predict phase distribution in turbulent flow regimes.