Chemical Reaction Engineering The vessel dispersion number (D/μL) for plug flow is ∞ 500 750 ∞ 500 750 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reactions with low activation energy are Non-spontaneous Always spantaneous Fast Slow Non-spontaneous Always spantaneous Fast Slow ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst loses its activity due to Covering of the catalytic active sites by a foregin substance All of these Loss in surface area of the active component Agglomeration of metal particles caused by thermal sintering of the solid surface Covering of the catalytic active sites by a foregin substance All of these Loss in surface area of the active component Agglomeration of metal particles caused by thermal sintering of the solid surface ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor. Fixed bed Tubular flow Stirred tank Batch Fixed bed Tubular flow Stirred tank Batch ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R? 2.24 2 1.6 2.5 2.24 2 1.6 2.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length Is at the highest allowable temperature throughout Increases First increases and then decreases Decreases Is at the highest allowable temperature throughout Increases First increases and then decreases Decreases ANSWER DOWNLOAD EXAMIANS APP
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