Chemical Reaction Engineering The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second) 1 ∞ L√(K/D1) 1/(L√(K/D1)) 1 ∞ L√(K/D1) 1/(L√(K/D1)) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are Of such size that the ratio of their volumes is < 5 None of these Of different sizes Equal in size Of such size that the ratio of their volumes is < 5 None of these Of different sizes Equal in size ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The half life period of a first order reaction is given by (where, K = rate constant. ) 6.93 K 2.5 K 0.693/K 1.5 K 6.93 K 2.5 K 0.693/K 1.5 K ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Differential method for analysing the kinetic data is used None of these When rate expressions are very simple For testing complicated mechanisms When the data are scattered None of these When rate expressions are very simple For testing complicated mechanisms When the data are scattered ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An irreversible aqueous phase reaction, A + B → P, is carried out in an adiabatic mixed flow reactor. A feed containing 4kmole/m³ of each A and B enters the reactor at 8m³ /hr. If the temperature of the exit stream is never to exceed 390 K, what is the maximum inlet feed temperature allowed?(Data: Heat of reaction = - 50 kJ/mole, Density of the reacting mixture = 1000kg/m³, Specific heat of reacting mixture = 2kJ/kg.K)The above data can be assumed to be independent of temperature and composition. 290 390 490 190 290 390 490 190 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering __________ resistance is not involved in the combustion of a carbon particle. Gas film Ash Chemical reaction None of these Gas film Ash Chemical reaction None of these ANSWER DOWNLOAD EXAMIANS APP
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