Question: Effective diffusivity (DE) in a catalyst pellet is related to molecular diffusivity (DN) and Knudsen diffusivity (DK) as [A]. DE = DM + DK [B]. [C]. DE = DM . DE [D]. DE = DN/DE Answer: Option B Explanation:…

Question: Signal normally used to study non-ideal flow by stimulus response technique is __________ input. [A]. pulse [B]. step [C]. both (a) & (b) [D]. neither (a) nor (b). Answer: Option C Explanation: No answer description available for this question.

Question: The importance of diffusion in a catalyst are increased by [A]. large catalyst particle size. [B]. an active surface of the catalyst. [C]. small pore diameter. [D]. all (a), (b) and (c). Answer: Option D Explanation: No answer description…

Question: Radioactive decay follows __________ order kinetics. [A]. first [B]. second [C]. third [D]. zero. Answer: Option A Explanation: No answer description available for this question.

Question: Helium-mercury method is used for the measurement of the __________ of the catalyst. [A]. surface area [B]. porosity [C]. pore volume [D]. both (b) & (c). Answer: Option D Explanation: No answer description available for this question.

Question: Pick out the wrong statement. [A]. Exit age description function (E) and internal age distribution function (I) are related as, . [B]. Chmisorption studies are useful in the determination of catalyst surface area and pore size distribution. [C]. A…

Question: Non-catalytic fluid-solid reactions are represented by __________ model. [A]. continuous reaction [B]. unreacted core [C]. both (a) and (b) [D]. neither (a) and (b) Answer: Option C Explanation: No answer description available for this question.

Question: The single parameter model proposed for describing non-ideal flow is the __________ model. [A]. tank in series [B]. dispersion [C]. both (a) & (b) [D]. neither (a) nor (b). Answer: Option C Explanation: No answer description available for this…

Question: With increase in temperature, the equilibrium __________ rises in case of endothermic reaction. [A]. constant [B]. conversion [C]. both (a) & (b) [D]. neither (a) nor (b) Answer: Option B Explanation: No answer description available for this question.