Chemical Reaction Engineering If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible. 0 ∞ > 0.5 < 0.5 0 ∞ > 0.5 < 0.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N₂ + 3H₂ ⇋ 2NH₃. Decreases Unpredictable from the data Remains unchanged Increases Decreases Unpredictable from the data Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is 2 1 3 0 2 1 3 0 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The equilibrium constant of a catalytic chemical reaction __________ due to the presence of a catalyst. Increases Decreases Remains unaffected Unpredictable from the data Increases Decreases Remains unaffected Unpredictable from the data ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst loses its activity due to All of these Covering of the catalytic active sites by a foregin substance Agglomeration of metal particles caused by thermal sintering of the solid surface Loss in surface area of the active component All of these Covering of the catalytic active sites by a foregin substance Agglomeration of metal particles caused by thermal sintering of the solid surface Loss in surface area of the active component ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Catalyst carriers 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 Have very high selectivity Increase the activity of a catalyst ANSWER DOWNLOAD EXAMIANS APP
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