Chemical Reaction Engineering Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ⇋ CaO + CO₂), the pressure of CO₂ increases, if An inert gas is pumped keeping the temperature constant The temperature is increased None of these A catalyst is added An inert gas is pumped keeping the temperature constant The temperature is increased None of these A catalyst is added ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Organic catalysts differ from the inorganic catalyst in the sense that the former is Prohibitively costly Active at very high temperature only Proteinous in nature Active at cryogenic temperatures only Prohibitively costly Active at very high temperature only Proteinous in nature Active at cryogenic temperatures only ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A) E + ΔHA E E + ΔHA - ΔHR ΔHA + ΔHR E + ΔHA E E + ΔHA - ΔHR ΔHA + ΔHR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the rate of a chemical reaction becomes slower at a given temperature, then the Free energy of activation is higher Initial concentration of the reactants remains constant Free energy of activation is lower Entropy changes Free energy of activation is higher Initial concentration of the reactants remains constant Free energy of activation is lower Entropy changes ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In flow reactors, the performance equations interrelate the rate of reaction to the All of these Extent of reaction Feed rate Reactor volume All of these Extent of reaction Feed rate Reactor volume ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is > 1 1 ∞ > 1 1 ∞ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS