Chemical Reaction Engineering The energy balance equation over a tubular reactor under transient conditions is A non-linear partial differential equation An ordinary non-linear differential equation A linear partial differential equation An algebric differential equation A non-linear partial differential equation An ordinary non-linear differential equation A linear partial differential equation An algebric differential equation ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is 8764°K 8621°K 9210°K 8987°K 8764°K 8621°K 9210°K 8987°K ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) Tan hT/tan T Tan T/T None of these Tan hT/T Tan hT/tan T Tan T/T None of these Tan hT/T ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order. Zero First Second None of these Zero First Second None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering From among the following, choose one which is not an exothermic process. Methanol synthesis Oxidation of sulphur Catalytic cracking Ammonia synthesis Methanol synthesis Oxidation of sulphur Catalytic cracking Ammonia synthesis 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 + ΔHA - ΔHR ΔHA + ΔHR E E + ΔHA E + ΔHA - ΔHR ΔHA + ΔHR E ANSWER DOWNLOAD EXAMIANS APP
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