Half-life period for a first order reaction is _____... - Solved MCQs & Answer

In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.)?

Ans: Z.H.ρ/LRead →