Exothermic reactions are best carried out in CSTR followed by a plug flow reactor A plug flow reactor followed by CSTR CSTR in series A CSTR TRUE ANSWER : ? YOUR ANSWER : ?
Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in Gland Saliva Blood Intestine TRUE ANSWER : ? YOUR ANSWER : ?
The half life period of a first order reaction is given by (where, K = rate constant. ) 2.5 K 0.693/K 1.5 K 6.93 K TRUE ANSWER : ? YOUR ANSWER : ?
For series reaction, the relative yield Both A and C hold good Is always greater for plug-flow reactor than for the single CSTR of the same volume Statement in A is wrong Decreases with increasing conversion TRUE ANSWER : ? YOUR ANSWER : ?
For a heterogeneous catalytic reaction Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction The surface of the catalyst does not play an important role during reaction The catalyst does not form an intermediate complex with the reactant A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important TRUE ANSWER : ? YOUR ANSWER : ?
Effectiveness factor of a catalyst pellet is a measure of the __________ resistance. None of these Chemical reaction Pore diffusion Gas film TRUE ANSWER : ? YOUR ANSWER : ?
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the Space time for each parallel line is same Larger reactors have more space time compared to smaller ones Space time for parallel lines is different None of these TRUE ANSWER : ? YOUR ANSWER : ?
Design of heterogeous catalytic reactor involves consideration of __________ steps. Only chemical Only physical Neither A nor B Both A & B TRUE ANSWER : ? YOUR ANSWER : ?
Fluidised bed reactor is characterised by Comparatively smaller equipment Uniformity of temperature Very small pressure drop Absence of continuous catalyst regeneration facility TRUE ANSWER : ? YOUR ANSWER : ?
Kinetics of a solid catalysed reaction can best be studied in a __________ reactor. Plug-flow Mixed Batch None of these TRUE ANSWER : ? YOUR ANSWER : ?