Chemical Reaction Engineering A plug-flow reactor is characterised by Constant composition and temperature of reaction mixture Presence of axial mixing High capacity Presence of lateral mixing Constant composition and temperature of reaction mixture Presence of axial mixing High capacity Presence of lateral mixing ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Catalyst carriers Have very high selectivity Increase the activity of a catalyst Inhibit catalyst poisoning Provide large surface area with a small amount of active material Have very high selectivity Increase the activity of a catalyst Inhibit catalyst poisoning Provide large surface area with a small amount of active material ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Promoter. Atlers the position of equilibrium in a reversible reaction All of these Initiates a chemical reaction and is a catalyst by itself Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals Atlers the position of equilibrium in a reversible reaction All of these Initiates a chemical reaction and is a catalyst by itself Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is rR/rS = (k₁/k₂).Csub>Aa-b Avoid recycle, when a > b Use high pressure and eliminate inerts, when a > b Use CSTR with a high conversion, when a > b Use batch reactor or plug flow reactor, when a > b Avoid recycle, when a > b Use high pressure and eliminate inerts, when a > b Use CSTR with a high conversion, when a > b Use batch reactor or plug flow reactor, when a > b ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure? Freundlich adsorption isotherm Langmuir adsorption isotherm Adsorption isobar None of these Freundlich adsorption isotherm Langmuir adsorption isotherm Adsorption isobar None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Carbon particles accummulated on the catalyst used in the gas oil cracking lies in the category of __________ poison. Stability Selectivity Chemisorbed Deposited Stability Selectivity Chemisorbed Deposited ANSWER DOWNLOAD EXAMIANS APP
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