Chemical Reaction Engineering Half life period of a chemical reaction is Half of the residence time of a reaction Half of the space time of a reaction The time required to reduce the concentration of the reacting substance to half its initial value None of these Half of the residence time of a reaction Half of the space time of a reaction The time required to reduce the concentration of the reacting substance to half its initial value None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called A ferment or an enzyme Fungi Haemoglobin None of these A ferment or an enzyme Fungi Haemoglobin 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. Chemisorbed Deposited Selectivity Stability Chemisorbed Deposited Selectivity Stability ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering When all the limiting reactant is consumed in the reaction, the operational yield __________ the relative yield. Equals Is smaller than Is greater than Can be either greater or smaller than (depends on the type of reaction) Equals Is smaller than Is greater than Can be either greater or smaller than (depends on the type of reaction) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation? There is no dynamic equilibrium between successive layer Langmuir None of these The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process There is no dynamic equilibrium between successive layer Langmuir None of these The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process 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)2 K3 = (K₁.K₂)0.5 K3(K₁+K₂)/2 K3 = K₁.K₂ K3 = (K₁.K₂)2 K3 = (K₁.K₂)0.5 ANSWER DOWNLOAD EXAMIANS APP
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