Chemical Reaction Engineering The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are Mostly irreversible Always irreversible Highly temperature sensitive Insensitive to temperature changes Mostly irreversible Always irreversible Highly temperature sensitive Insensitive to temperature changes ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only __________ the true value. Equal None of these Twice Half Equal None of these Twice Half ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In Langmuir treatment of adsorption, All the adsorption does not take place by the same mechanism Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site Extent of adsorption is more than one complete monomolecular layer on the surface Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule All the adsorption does not take place by the same mechanism Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site Extent of adsorption is more than one complete monomolecular layer on the surface Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst in a chemical reaction Increases the frequency of collisions of reacting species All of these Alters the reaction mechanism Decreases the activation energy Increases the frequency of collisions of reacting species All of these Alters the reaction mechanism Decreases the activation energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering At a given temperature, K₁, K₂ and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH₄(g) + H₂O(g) ⇋ CO(g) + 3H₂(g), CO(g) + H₂O(g) ⇋ CO₂(g) + H₂(g) CH₄(g) + 2H₂O(g) ⇋ CO₂(g) + 4H₂(g) Then K₁, K₂ and K3 are related as: K3 = (K₁.K₂)2 K3 = K₁.K₂ K3 = (K₁.K₂)0.5 K3(K₁+K₂)/2 K3 = (K₁.K₂)2 K3 = K₁.K₂ K3 = (K₁.K₂)0.5 K3(K₁+K₂)/2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A plug-flow reactor is characterised by 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 Constant composition and temperature of reaction mixture ANSWER DOWNLOAD EXAMIANS APP
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