Chemical Reaction Engineering The time needed to achieve the same fractional conversion for particles of different sizes (d) when chemical reaction controls, is proportional to D1.5 D D2 √d D1.5 D D2 √d ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is not a unit of reaction rate? Mole formed/volume of catalyst) (time) None of these Moles formed/volume of reactor) (time) Moles for med/(surface of catalyst) (time) Mole formed/volume of catalyst) (time) None of these Moles formed/volume of reactor) (time) Moles for med/(surface of catalyst) (time) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is Most suitable for very large production rate Least expensive to operate for a given rate Suitable for liquid phase reactions involving small production rate Suitable for gas-phase reactions on commercial scale Most suitable for very large production rate Least expensive to operate for a given rate Suitable for liquid phase reactions involving small production rate Suitable for gas-phase reactions on commercial scale ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance. Chemical reaction Diffusion through ash layer Film diffusion Either A, B or C Chemical reaction Diffusion through ash layer Film diffusion Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering When a high liquid hold up is required in a reactor for gas liquid reaction, use __________ coloumn. Bubble Packed Spray Tray Bubble Packed Spray Tray ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because CaO is not dissociated Of high calcination temperature CaO is more stable than CaCO₃ CO₂ escapes continuously CaO is not dissociated Of high calcination temperature CaO is more stable than CaCO₃ CO₂ escapes continuously ANSWER DOWNLOAD EXAMIANS APP
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